The foundation of the abbey at Pannonhalma took place in 996, just four years prior to the founding of the Hungarian Kingdom. Nestled atop a tall hill in northwestern Hungary, the abbey is home to the nation’s oldest collection of books, as well as some of its most significant and earliest written records.
Source: https://www.euronews.com/culture/2025/07/13/medieval-hungarian-library-battles-beetle-infection-to-save-national-treasures