# Thermal pools and water parks in Romania: where to go in summer, with children, for warm water and slides

[Romania](https://peplaiuri.ro/en/attractions) › [Guides](https://peplaiuri.ro/en/guides)

Published on 5 November 2026 · Facts checked on 5 November 2026

Romania's large thermal pools, with warm water and slides, are at [Băile Felix](https://peplaiuri.ro/en/baile-felix) (the Apollo-Felix Complex, Aqua Park President, Felixarium), at [Călimănești-Căciulata](https://peplaiuri.ro/en/calimanesti-caciulata) (AquaPark Cozia, with 9 slides) and at [Therme București](https://peplaiuri.ro/en/therme-bucuresti), where the Galaxy zone has 17 slide runs. All three have pools open all year round. In summer they are joined by the open-air pools at [Băile 1 Mai](https://peplaiuri.ro/en/baile-1-mai), [Geoagiu-Băi](https://peplaiuri.ro/en/geoagiu-bai), [Moneasa](https://peplaiuri.ro/en/moneasa) and [Băile Herculane](https://peplaiuri.ro/en/baile-herculane).

Below is a table of the pools, showing which are thermal, which are indoors and what they have for children, then resort by resort. The resorts themselves are described in the [guide to thermal baths in Romania](https://peplaiuri.ro/en/guides/bai-termale-romania); opening hours and prices are on each resort's page.

## In short

- The Apollo-Felix Complex at Băile Felix has 10 thermal pools, two of them for children, and 5 slides; it is open all year, but from 21 December the wave pool and the slides close until the following season.
- Aqua Park President, on the southern edge of Băile Felix, has 14 indoor and 6 outdoor thermal pools and is open all year (operator's website, November 2026).
- AquaPark Cozia, at Căciulata, has 13 indoor and outdoor pools with thermal water at 28–37 °C and 9 slides, open all year.
- At Therme București, children under 14 are only allowed in the Galaxy zone, the one with the wave pool and the 17 slide runs; the geothermal water is 33–36 °C in the pools.
- The thermal pools at Băile 1 Mai, Geoagiu-Băi, Moneasa and Băile Herculane are open-air and operate only in the warm season.
- Aqua Magic Mamaia and the aqua park at Arsenal Park have no thermal water and are open only in summer.

## Thermal pools and water parks: comparison table

The table covers the pools and water parks on the resort pages of this site. "All year" means some pools are open in winter too; what stays open in the cold season is detailed in the [guide to thermal baths open in winter](https://peplaiuri.ro/en/guides/bai-termale-iarna).

In the west of the country there are other popular thermal pools, at Tășnad, Carei, Tămășeu, Lovrin, Deta and Aquapark Nymphaea in Oradea, which do not yet have a page on the site and are not included here.

| Pool | Resort | Water | Indoor / outdoor | Slides | When it is open |
| --- | --- | --- | --- | --- | --- |
| Apollo-Felix Complex | Băile Felix | thermal | outdoor, 10 pools, 2 for children | 5 | all year; waves and slides not from 21 December |
| Aqua Park President | Băile Felix | thermal | 14 indoor pools, 6 outdoor | yes | all year |
| Felixarium (Lotus Therm) | Băile Felix | thermal | 9 pools under a dome, 4 outside | 2, indoors | all year; outside, in announced periods |
| Venus Waterland | Băile 1 Mai | geothermal | outdoor | not published | summer, until 14 September |
| Wave Pool (Ștrandul cu Valuri) | Băile 1 Mai | thermal, 26 °C | outdoor, wave pool | no | summer |
| AquaPark Cozia | Călimănești-Căciulata | thermal, 28–37 °C | 13 pools, indoor and outdoor | 9 | all year |
| Galaxy (Therme) | Therme București | geothermal, 33–36 °C in the pools | under a dome, plus an outdoor beach in summer | 17 runs | all year |
| Băile Daco Romane | Geoagiu-Băi | thermal, 29–33 °C | outdoor, 4 pools | 1, at the children's pool | summer |
| Moneasa pool | Moneasa | thermo-mineral, 31 °C | outdoor, 3 pools | not published | summer |
| Șapte Izvoare, Venera, Versay | Băile Herculane | thermal | outdoor | not published | warm season |
| Wellness Tușnad | Băile Tușnad | thermal, 34–36 °C | indoor, plus one outdoor pool | no | all year |

*From the resort pages and the operators' websites (felixspa.com, baile-felix.ro, lotustherm.ro, calimanesti-caciulata.ro), checked on 5 November 2026. Hourly opening times and prices are on the resort pages.*

- [Băile Felix](https://peplaiuri.ro/en/baile-felix) — Resorts and thermal baths · Băile Felix, BH · Free · 4½ – 5 hours · Top 100
  Romania's largest year-round spa resort, 8 km from Oradea: thermal springs of up to 49 °C, open-air baths that run all winter and a reserve of water lilies and thermal lotuses.
- [Călimănești-Căciulata](https://peplaiuri.ro/en/calimanesti-caciulata) — Resorts and thermal baths · Călimănești, VL · Free · 3½ – 4 hours
  A spa resort in the Olt Valley, where the river leaves the Cozia Mountains: sulphur springs known since the 19th century, the Central Pavilion of 1886 and thermal pools open all year round.
- [Therme București](https://peplaiuri.ro/en/therme-bucuresti) — Resorts and thermal baths · Balotești, IF · 71 lei · 4 – 4½ hours
  A thermal and wellness complex on the edge of Bucharest, on the DN1: geothermal pools under a glass dome full of palm trees, water slides, saunas and a sandy beach open in summer.

## The thermal pools of Băile Felix and Băile 1 Mai

[Băile Felix](https://peplaiuri.ro/en/baile-felix), 8 km from Oradea, has three thermal water complexes. **Apollo pool** (the Apollo-Felix Complex) has been operating since 1900: ten pools, one with waves and two for children only, and five slides, behind the half-timbered pavilion. **Aqua Park President**, on the southern edge, is the largest by number of pools, with 14 indoor and 6 outdoor, slides outside and one that starts inside the building. **Felixarium**, the aqua park of the Lotus Therm hotel, has nine pools under an opening dome, with caves, waterfalls and two slides, plus open-air pools, including a 25 m swimming pool open from May to October.

At [Băile 1 Mai](https://peplaiuri.ro/en/baile-1-mai), about 4 km away by road, **Venus Waterland** has geothermal pools and a playground, while the **Wave Pool** (Ștrandul cu Valuri), dating from 1896, starts its waves at the sound of a bell, in a pool with water at 26 °C. Both are summer pools. The area is described in the [guide to thermal baths, under Crișana](https://peplaiuri.ro/en/guides/bai-termale-romania#crisana).

- [Băile Felix](https://peplaiuri.ro/en/baile-felix) — Resorts and thermal baths · Băile Felix, BH · Free · 4½ – 5 hours · Top 100
  Romania's largest year-round spa resort, 8 km from Oradea: thermal springs of up to 49 °C, open-air baths that run all winter and a reserve of water lilies and thermal lotuses.
- [Băile 1 Mai](https://peplaiuri.ro/en/baile-1-mai) — Resorts and thermal baths · Băile 1 Mai, BH · Free · 3½ – 4 hours
  A small spa resort 8 km from Oradea, with thermal springs known since 1221, a wave pool from 1896, the Venus Waterland baths and a park with old buildings.

## AquaPark Cozia and the pools of Călimănești-Căciulata

At [Călimănești-Căciulata](https://peplaiuri.ro/en/calimanesti-caciulata), in the Olt Valley, the geothermal water comes up from boreholes about 3,000 m deep at almost 90 °C and is cooled for the pools. **AquaPark Cozia**, at Căciulata, has 13 indoor and outdoor pools with water at 28–37 °C and 9 slides, indoor and outdoor, open all year. The zone with the indoor pools (zone B) opens daily; zone A, with the Oltul outdoor pool, currently operates only from Friday to Sunday.

At Călimănești, the Hotel Central aqua park has an indoor pool with massage jets, hydrotherapy and a jacuzzi; it is smaller and has no slides listed on its website. At both you enter with a 3 hour 30 minute ticket, valid for a single entry: if you leave, the ticket is lost. After your swim, [Cozia Monastery](https://peplaiuri.ro/en/manastirea-cozia) is right at the exit from Căciulata towards Sibiu.

- [Călimănești-Căciulata](https://peplaiuri.ro/en/calimanesti-caciulata) — Resorts and thermal baths · Călimănești, VL · Free · 3½ – 4 hours
  A spa resort in the Olt Valley, where the river leaves the Cozia Mountains: sulphur springs known since the 19th century, the Central Pavilion of 1886 and thermal pools open all year round.
- [Cozia Monastery](https://peplaiuri.ro/en/cozia-monastery) — Monasteries · Călimănești, VL · ½ – 1 hours · Top 100
  Mircea the Elder's foundation on the banks of the Olt, consecrated in 1388: the Holy Trinity church, with stone-and-brick façades, a Brâncovenesc porch and the prince's tomb in the narthex.

## Therme București: the slides and pools of Galaxy

[Therme București](https://peplaiuri.ro/en/therme-bucuresti), on the DN1, about 19 km from Piața Victoriei, is not a spa resort but a pool complex with geothermal water from its own borehole, brought up at about 81 °C and cooled to 33–36 °C in the pools. For a day with children, the zone that matters is **Galaxy**: the wave pool, a water playground for little ones, an indoor pool, an outdoor pool and the slide system with 17 runs, from those for children to The Racer, where you go down side by side with two others.

Children under 14 are only allowed in Galaxy, accompanied by an adult. The Palm, the zone with palm trees and the mineral pools, is for adults, and no children are allowed in Elysium, the sauna zone. The slides have age and height limits posted at each one. In summer, the Sands of Therme outdoor beach is added to the pools under the dome. The option for people in Bucharest is in the [guide to thermal baths, under Bucharest](https://peplaiuri.ro/en/guides/bai-termale-romania#bucuresti).

- [Therme București](https://peplaiuri.ro/en/therme-bucuresti) — Resorts and thermal baths · Balotești, IF · 71 lei · 4 – 4½ hours
  A thermal and wellness complex on the edge of Bucharest, on the DN1: geothermal pools under a glass dome full of palm trees, water slides, saunas and a sandy beach open in summer.

## The thermal pools of Băile Herculane: Șapte Izvoare

At [Băile Herculane](https://peplaiuri.ro/en/baile-herculane), in the Cerna Valley, the pools are open-air and operate in the warm season. **Șapte Izvoare** is about 5 km upstream of Piața Hercules, on the DN67D towards Baia de Aramă, with pools fed by warm springs, next to the campsite of the same name. Closer to the centre, about 700 m downstream of Piața Hercules, on the bank of the Cerna, are the **Venera Baths**, and at the entrance to the resort, in Pecinișca, is the **Versay thermal pool**.

The pools set their own opening hours and prices and do not publish them on an official website, so call ahead. The small sulphur-water tubs on the Via Sissi promenade are free, but have no lifeguard, changing rooms or opening hours: you bathe at your own risk. The resort is in the [guide to thermal baths, under Banat](https://peplaiuri.ro/en/guides/bai-termale-romania#banat).

- [Băile Herculane](https://peplaiuri.ro/en/baile-herculane) — Resorts and thermal baths · Băile Herculane, CS · Free · 3½ – 4 hours · Top 100
  Romania's oldest spa resort, recorded as early as AD 153, in the Cerna valley: hot sulphur springs, a Habsburg old town around the Hercules statue and free thermal tubs on the riverbank.

## Summer thermal pools: Geoagiu-Băi and Moneasa

At [Geoagiu-Băi](https://peplaiuri.ro/en/geoagiu-bai), in Hunedoara County, about 37 km from Deva, the **Băile Daco Romane** pool complex has four pools with thermal water at 29–33 °C: one 1.6–3.5 m deep, with a 10 m diving platform, one 0.6–1.9 m deep, the Olympic pool and a 50 cm children's pool with a slide. It operates in summer, and with the wristband you can leave and come back in. Next to it are the [Roman Baths of Germisara](https://peplaiuri.ro/en/termele-romane-germisara), the ancient pool in the travertine mound, which can be visited but is not a bathing place.

At [Moneasa](https://peplaiuri.ro/en/moneasa), in Arad County, about 100 km from Arad, the pool in the centre has three pools from 80 cm to 1.90 m deep, fed with thermo-mineral water from a 31 °C spring, below the forests of the Codru-Moma Mountains. It is open throughout the warm season. Both resorts are in the [guide to thermal baths, under Transylvania](https://peplaiuri.ro/en/guides/bai-termale-romania#transilvania) and [under Banat](https://peplaiuri.ro/en/guides/bai-termale-romania#banat).

- [Geoagiu-Băi](https://peplaiuri.ro/en/geoagiu-bai) — Resorts and thermal baths · Geoagiu-Băi, HD · Free · 4½ – 5 hours
  A spa resort at the foot of the Metaliferi Mountains: thermal water at 29–33 °C, the Băile Daco Romane lido with four pools, and the Roman baths of Germisara and Clocota waterfall close by.
- [Roman Baths of Germisara](https://peplaiuri.ro/en/roman-baths-of-germisara) — Monuments and historic sites · Geoagiu-Băi, HD · Free · 30 min · UNESCO World Heritage
  The Roman baths in the centre of the spa resort of Geoagiu-Băi: a sacred pool cut into a travertine mound, with channels, steps and rock-cut rooms, part of the Dacian Limes UNESCO site.
- [Moneasa](https://peplaiuri.ro/en/moneasa) — Resorts and thermal baths · Moneasa, AR · Free · 4½ – 5 hours
  A spa and climatic resort at ~300 m at the foot of the Codru-Moma Mountains: mesothermal waters of 25–32 °C, a thermal open-air pool, forest air and short trails to the marble quarry and caves.

## Indoor water parks with thermal water, open all year

If you want pools and slides under a roof, for a rainy day or out of season, the options are few: the Galaxy zone at [Therme București](https://peplaiuri.ro/en/therme-bucuresti), under the glass dome; **Felixarium** at [Băile Felix](https://peplaiuri.ro/en/baile-felix), with nine pools under an opening dome; the indoor pools at **Aqua Park President**, also at Felix; and zone B at **AquaPark Cozia**, at [Călimănești-Căciulata](https://peplaiuri.ro/en/calimanesti-caciulata).

Without slides, [Băile Tușnad](https://peplaiuri.ro/en/baile-tusnad) has **Wellness Tușnad**, open all year, with a thermal pool at 34–36 °C, a swimming pool, a children's pool and an outdoor pool. The Apollo-Felix Complex has open-air pools that stay open in winter too, but without waves and slides after 21 December. What stays open in winter, pool by pool, is in the [guide to thermal baths open in winter](https://peplaiuri.ro/en/guides/bai-termale-iarna).

- [Băile Tușnad](https://peplaiuri.ro/en/baile-tusnad) — Resorts and thermal baths · Băile Tușnad, HR · Free · 3½ – 4 hours · Top 100
  A spa resort in the Olt gorge between the Harghita and Bodoc mountains: naturally sparkling mineral springs, mofettes, a wellness centre with thermal water and trails up to Falcon Rock.

## Water parks for children: shallow pools and slide limits

For small children, shallow pools matter more than the number of slides. Pools or zones announced for children are at: the Apollo-Felix Complex (two pools for children only), Felixarium (children's pool and playground), Băile Daco Romane at Geoagiu-Băi (50 cm pool with a slide), the Galaxy zone at Therme (water playground) and Wellness Tușnad (children's pool). Venus Waterland, at Băile 1 Mai, has a playground.

The big slides have age and height limits, posted at each one. At Therme, children under 3 wear swim nappies and those under 5 wear armbands. At every pool, the rules are posted at the entrance. Very young children go in free at most pools, but the age limit differs from one operator to another; the exact ages are on the resort pages.

## Thermal or not: water parks and pools with other water

Not every water park has thermal water. [Aqua Magic Mamaia](https://peplaiuri.ro/en/aqua-magic-mamaia), on the coast, has pools, slides and a 360 m lazy river, but no thermal water, and is open only in July and August. At Orăștie, [Arsenal Park](https://peplaiuri.ro/en/arsenal-park) has a summer aqua park with slides and indoor and outdoor pools, also without thermal water.

Other pools have mineral water, not warm water: the town pool at [Băile Olănești](https://peplaiuri.ro/en/baile-olanesti) has sulphur water heated to 28–30 °C, and the four open-air pools at [Băile Săcelu](https://peplaiuri.ro/en/baile-sacelu) have sulphurous, iodized water and mud, open in summer. The salt-water pools, at [Ocna Sibiului](https://peplaiuri.ro/en/ocna-sibiului), [Durgău Salt Lakes](https://peplaiuri.ro/en/strandul-durgau) or [Băile Sărate Turda Lido](https://peplaiuri.ro/en/strandul-baile-sarate-turda), are in the [guide to salt baths and salt lakes](https://peplaiuri.ro/en/guides/bai-sarate-si-lacuri-sarate); the difference is also explained in the [pillar guide](https://peplaiuri.ro/en/guides/bai-termale-romania#bai-sarate-nu-termale).

- [Aqua Magic Mamaia](https://peplaiuri.ro/en/aqua-magic-mamaia) — Seaside · Constanța, CT · 130 lei · 4½ – 5 hours
  The water park at the entrance to Mamaia resort, open since 2003, with slides, pools, a 360 m lazy river and relaxation areas, between the boulevard and Lake Siutghiol.
- [Arsenal Park](https://peplaiuri.ro/en/arsenal-park) — Parks and gardens · Orăștie, HD · 40 lei · 3½ – 4 hours
  A military-themed park at Orăștie, on 88 hectares of forest: an open-air museum of military hardware, an adventure park, a 607 m zip line and a summer water park.
- [Băile Olănești](https://peplaiuri.ro/en/baile-olanesti) — Resorts and thermal baths · Băile Olănești, VL · Free
  A spa resort in a wooded valley below the Vâlcea mountains, with more than 30 numbered mineral springs, a springs walk along the river and Horea's wooden church, brought here from the Apuseni Mountains.
- [Băile Săcelu](https://peplaiuri.ro/en/baile-sacelu) — Resorts and thermal baths · Săcelu, GJ · 40 lei · 2½ – 3 hours
  A spa and climatic resort in the Subcarpathians of Gorj, in the Blahnița valley: four open-air pools of sulphurous, chloride, bromide and iodine mineral water, with therapeutic mud.

## The largest water park in Romania

There is no official ranking of water parks in Romania, and operators do not publish their areas in the same way. Going by the figures published for the complexes on the site, the most slides are in the Galaxy zone at [Therme București](https://peplaiuri.ro/en/therme-bucuresti), with 17 runs, followed by [AquaPark Cozia](https://peplaiuri.ro/en/calimanesti-caciulata), with 9. The most thermal pools are at Aqua Park President in [Băile Felix](https://peplaiuri.ro/en/baile-felix), with 20, indoor and outdoor.

[Aqua Magic Mamaia](https://peplaiuri.ro/en/aqua-magic-mamaia), the best-known water park on the coast, covers 27,500 square metres, but has no thermal water and is open only in summer. What else to do with children on the coast is in the [guide to the seaside with children](https://peplaiuri.ro/en/guides/litoralul-cu-copii#aqua-magic-mamaia-cu-copii).

## Before a day at a thermal pool

At almost all the large complexes you get in with a wristband: at Felix and at Therme you pay with it inside and settle the bill on the way out, and a lost wristband has to be paid for. At AquaPark Cozia the ticket is for 3 hours 30 minutes from entry, and extra time is charged. At Therme and at Aqua Magic you cannot bring in food and drink from outside.

Do not stay long in very hot pools, especially if you have heart or blood pressure problems (the rule posted at the tubs in Herculane); spa treatments are only taken after a medical consultation, as the operators require. The open-air pools at Herculane, Geoagiu-Băi and Moneasa depend on the weather. Hourly opening times and prices change from one season to the next and are on the resort pages; if you are choosing between resorts, see [the best thermal baths](https://peplaiuri.ro/en/guides/bai-termale-romania#cele-mai-bune).

## Frequently asked questions

**What is the largest water park in Romania?**

There is no official ranking. Of the complexes on the site, the most slides are in the Galaxy zone at Therme București (17 runs), and the most thermal pools at Aqua Park President in Băile Felix (20). Aqua Magic Mamaia covers 27,500 m², but has no thermal water.

**Which thermal water park is open all year?**

Therme București (Galaxy zone), Aqua Park President and Felixarium at Băile Felix, and AquaPark Cozia at Călimănești-Căciulata have pools open all year. At the Apollo-Felix Complex, the wave pool and the slides close from 21 December until the following season.

**How many slides does AquaPark Cozia have?**

Nine, indoor and outdoor, plus 13 pools with thermal water at 28–37 °C (operator's website, November 2026). It is open all year.

**Is Apollo pool at Băile Felix open in winter?**

Yes, the Apollo-Felix Complex is open all year, with open-air thermal pools. From 21 December, the wave pool and the slides close until the new season opens.

**Can children go into every zone at Therme București?**

No. Children under 14 are only allowed in Galaxy, the zone with the slides and the wave pool. Only babies under 3, with their parents, may enter The Palm, and no children at all are allowed in Elysium.

**Which thermal pool has a pool for small children?**

The Apollo-Felix Complex has two pools for children only, the Băile Daco Romane pool complex at Geoagiu-Băi has a 50 cm pool with a slide, and Felixarium and Wellness Tușnad have children's pools.

**Does Aqua Magic Mamaia have thermal water?**

No. Aqua Magic is a summer water park, with pools, slides and a 360 m lazy river, open in 2026 from 4 July to 31 August.

**Where is the Șapte Izvoare pool in Băile Herculane?**

On the DN67D, about 5 km upstream of Piața Hercules, towards Baia de Aramă, next to the campsite of the same name. It operates in the warm season; opening hours and prices are not published on an official website.

## Sources

- [Turism Felix: Apollo-Felix Complex](https://www.felixspa.com/ro/complex-apollo-felix)
- [Turism Felix: Venus Waterland (Băile 1 Mai)](https://www.felixspa.com/ro/aqua-park-venus)
- [Aqua Park President: opening hours and prices](https://baile-felix.ro/aqua-park/en/orar-tarife/)
- [Lotus Therm: Felixarium](https://www.lotustherm.ro/ro/aquapark/felixarium)
- [AquaPark Cozia (Călimănești-Căciulata)](https://calimanesti-caciulata.ro/aquapark-cozia/)
- [Hotel Central aqua park (Călimănești)](https://calimanesti-caciulata.ro/aquapark-central/)
- [Therme București, official website](https://therme.ro/)
- [Băile Daco Romane (Geoagiu-Băi)](https://bailedacoromane.ro/)
- [Băile Herculane Town Hall: the resort](https://primaria-baileherculane.ro/2025/07/14/statiunea-baile-herculane/)
- [Aqua Magic Mamaia, official website](https://www.aqua-magic.ro/)

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Last updated: 5 November 2026
Source: Pe Plaiuri (https://peplaiuri.ro/en) — Guide to tourist attractions in Romania