Fortresses and fortifications

A Saxon-built, still-inhabited medieval walled town on a hill above the Târnava Mare, with guild towers and the famous Clock Tower; a UNESCO World Heritage Site since 1999.

Romania's largest bastion fortress, a seven-pointed star built by the Habsburgs in 1715–1738 at Alba Iulia; baroque gates, cathedrals, the Union Hall and a changing of the guard, all with free access.

A pentagonal bastion fortress built by the princes of Transylvania in the 16th–17th centuries: five bastions, a princely palace housing the Oradea City Museum, and courtyards you can walk into freely.

A 13th-century hilltop fortress on a volcanic hill above Deva, with three enclosures restored by 2024 and wide views over the Mureș valley.

The ruins of a Dacian fortress on the rocky summit of Piatra Cetății, above the DN66, which guarded the southern approach to Sarmizegetusa Regia; a UNESCO site, reached only on foot by a steep climb.

The ruins of a Dacian fortress on a wooded hill above the Sebeș valley: limestone walls in the murus dacicus technique and the base of a tower house, the only Dacian UNESCO site in Alba County.

A 15th-century horseshoe-shaped defence tower perched on a rock above the Graft, with one of the best views over Brașov's old town.

A bastioned fortress on Citadel Hill, north of the old town, built to stop enemies firing on Brașov from the heights; the interior is closed for works, but the walls and the view can be enjoyed from the paths on the hill.

The only surviving medieval gate of Brașov's walled town, a white tower of 1559 with four corner turrets and the town's coat of arms; next to it, the neoclassical Șchei Gate of 1827–1828.

The oldest building in Galați, a merchants' church consecrated in 1647, with walls up to 1.8 m thick, a bell tower and a fortified loft with 28 loopholes, on the bank of the Danube.

The ruins of a 13th-century stone fortress on Dealul Cetății above Șiria, with walls, towers and a wide view over the Arad Plain.

The Daco-Roman and Roman-Byzantine fortress in Corabia, with its excavated walls and towers, a 6th-century basilica, the "secret well" and the northern pier of Constantine the Great's bridge over the Danube.