Batthyaneum Library
About Batthyaneum Library
The Batthyaneum Library, the Alba Iulia branch of the National Library of Romania, stands in the Alba Carolina Fortress, on Strada Gabriel Bethlen. The building is the former church of the Trinitarian monastery, raised in the Baroque style in the first half of the 18th century. The monastery was dissolved in 1784, during the reforms of Emperor Joseph II, and Ignațiu Batthyány, the Roman Catholic Bishop of Transylvania, bought the building and from 1792 converted it to hold a library, an astronomical observatory and a diocesan printing press. The library was founded by a deed signed on 31 July 1798, with open access for anyone who wished to use it.
The bishop's founding collection numbered about 18,000 items. Today the library holds over 50,000 books, 19,000 documents, 1,230 manuscripts and almost 600 incunabula. Among the oldest pieces are the 1488 edition of Homer, Livy's Roman History, the Palia de la Orăștie (1582) and a fragment of the Codex Aureus, a 9th-century gospel book, containing the Gospels of Matthew and Mark. In 1843 the teachers of the town's Roman Catholic lyceum began recording weather data here as well, and the Batthyaneum observatory became the first weather station on the present-day territory of Romania.
What you can see
The usual visit takes in the Aula Magna, the library's great hall, and the exhibition space, where temporary exhibitions are also held. The manuscripts and incunabula are not part of the usual visit. The building can also be seen well from outside, from the walls and ditches of the fortress, with its Baroque façade and tall roof above the brick bastions.
Good to know
The library can be visited only by organised groups, on a request approved in writing by the Director General of the National Library of Romania. Requests are sent by email to batthyaneum@bibnat.ro.
Information verified on 29 October 2026.
- The Aula Magna, the library's great hall, in the former Baroque church of the Trinitarians.
- The exhibition space, with temporary exhibitions from the library's collections.
- The Baroque façade and tall roof, seen from the walls and ditches of the Alba Carolina Fortress.
- A place tied to Ignațiu Batthyány, the bishop who founded the library in 1798, with an astronomical observatory and a weather station from 1843.
Good to know before you go
- Getting there
By car: the library is in the Alba Carolina Fortress in Alba Iulia, on Strada Gabriel Bethlen. Cluj-Napoca is ~107 km away (~1 hour 30 minutes), Sibiu ~72 km (~1 hour 20 minutes) and Deva ~81 km (~1 hour). The last stretch is on foot, through the fortress.
Public transport: Alba Iulia has train and coach links with Cluj-Napoca, Sibiu, Deva and other large cities. From the town you walk up into the fortress through one of its gates.
- Where to park
The library has no car park of its own for visitors. In and around the Alba Carolina Fortress you park for a fee; spaces fill up mainly at weekends and on event days.
- Rules
The visit is made as a group, on written approval, and with a guide. Carry an ID document, keep quiet, and do not touch the books or exhibits. Photography and filming in the library are arranged with the administration.
- Facilities
guiding during visits · temporary exhibitions · virtual tour and digital collections online
Frequently asked questions about Batthyaneum Library
How long does a visit to Batthyaneum Library take?
A visit to Batthyaneum Library takes about 45 min (Aula Magna and the exhibition).
Can you visit Batthyaneum Library with kids?
Yes, Batthyaneum Library is suitable for children (guided visit, in a group).
Where can I park at Batthyaneum Library?
There is paid parking at Batthyaneum Library (in and around the fortress). More under “Where to park”
How do I get to Batthyaneum Library?
Batthyaneum Library is located at Strada Gabriel Bethlen 1, Cetatea Alba Carolina, Alba Iulia, Alba County. More under “Getting there”
When is the best time to visit Batthyaneum Library?
The best season for Batthyaneum Library: All year round (all year, on request).
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