- LASTEST NEWS
Monumentenbezit assumed temporary management of Castle Oud Wassenaar at the beginning of this year. Much has happened since then.
Other news
New acquisition: Boerhaavelaan 6 in Leiden
November 4, 2025
Start of garden restoration at Trompenburgh Estate
September 30, 2025
Wood research Slangenburg Castle
April 17, 2025
Opening of the Ruins of Brederode
April 1, 2025
Trompenburgh country estate temporarily open
March 11, 2025
Oud-Wassenaar Castle on course for recovery
March 5, 2025