In addition to regular opening hours, the State Hall and the museums of the Austrian National Library be open on May 25, 2026.
On Pentecost Sunday as well as on public holidays the reading rooms of the Austrian National Library are closed.
Support the Austrian National Library in conserving precious cultural treasures such as the "Black Hours" for future generations. With your donation you make an important contribution to the continuity of our common cultural heritage and and enable the sustainable conservation of this centuries-old, priceless manuscript for future generations.
Please help! Thank you very much for your contribution.
Your donation is tax deductible!
The "Black Hours" of Galeazzo Maria Sforza is one of the most precious items in the Austrian National Library's collection. This rare and extremely valuable 15th-century manuscript is also known as the "Black Hours", named after its deep black parchment pages with a text in gold and silver ink and an elaborate ornamentation. However, the manuscript's unique aesthetic also poses the greatest challenge to its preservation. The iron gall ink used to colour both sides of the parchment dramatically breaks down the collagen fibres, causing the pages to become brittle. An elaborate conservation project is dealing with saving this important treasure. Your donation preserves cultural heritage!
Bank account:
BAWAG (BLZ 60.000), Wiedner Gürtel 11, 1100 Vienna
BIC: BAWAATWW
IBAN: AT38-6000-0000-9605-0710
Your donation is tax deductible!
We will gladly advise you personally!
Contact:
Michaela Hübner
Sponsoring and Event Management
Tel.: +43 1 534 10-263
spenden[at]onb.ac.at