On June 21, 2025 the State Haal will only be open starting 1 p.m.
The reading rooms on Heldenplatz and the reading rooms of the collections are closed on public holidays. This also applies to Thursday, June 19 (Corpus Christi).
Regular opening hours apply in the museums; in addition, all museums are open on Whit Monday.
Postal address:
P.O.Box 25
1015 Wien
Phone: +43 1 534 10-730
E-Mail: esperanto[at]onb.ac.at
July – September
Monday – Friday: 9.00 – 13.00
October – June
Monday – Wednesday: 9.00 – 16.00
Thursday: 12.00 – 19.00
Friday: 9.00 – 13.00
Special opening hours:
On November 2 only open until 12 p.m.
Closed:
Good Friday, Holy Saturday, Easter Sunday, Whit Sunday, July 25 until August 5, December 24, December 31 and public holidays.
The Department of Planned Languages offers barrier-free access.