Professional monument management

Preserving monuments for the future is our job. We do this by maintaining, researching and repurposing the structures, where opening to the public is an important part. The unique collection of special monuments spread throughout the Netherlands, requires an innovative organization that is always in development.

Trompenburgh is the office of Monumentenbezit

Projects Monumentenbezit

From maintenance to repairs and restoration to repurposing. You can read all about Monumentenbezit projects here. 
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Featured:

Help build the future of Oud-Wassenaar Castle

In 2025, Monumentenbezit took over the temporary management of Oud-Wassenaar Castle to halt the further deterioration of this iconic national monument. We are actively working on a future-proof repurposing, and we need your help to achieve this. 

News

  • Volunteer vacancies Collection Care & Housekeeping Slangenburg Castle

    January 30, 2026

  • Monumentenbezit celebrates its 10th anniversary

    January 15, 2026

  • Subsidy from the Province of North Holland Trompenburgh Country Estate

    December 11, 2025