Start of garden restoration at Trompenburgh Estate

Sept. 30, 2025
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Monday, October 6 is the day: the restoration of the garden of Buitenplaats Trompenburgh will start. This will give this unique ensemble of house, water and garden back its original coherence.

Restored, with an eye to climate change and biodiversity

The basis for the garden restoration is the original design from the 17th century, in which house and garden form a whole. Experience and beauty are central to this.

For starters, part of the current lawn will be excavated so that the house will be completely back in the water, just like before. Also, the four islands will be brought back and a hedge will be planted on the inner islands. This hedge will give the islands back their "secret" character from Trump's time.

In the garden, the avenue system will be restored and new trees such as limes and elms will be planted. These species cope well with changing climatic conditions and give undergrowth more of a chance.

Finally, the buitenplaats's orchard will return, as much as possible with the historic fruit varieties. The orchard thus forms a living collection that, together with the new plantings on the grounds, enhances biodiversity.

If all goes according to schedule, the restoration of the garden will be completed in the spring of 2026.

Buitenplaats Trompenburgh

Buitenplaats Trompenburgh was built in the 17th century for Admiral Cornelis Tromp and his wife Margaretha van Raephorst. Much of the interior has been preserved, with the domed hall as the highlight - a smaller version of the Oranjezaal at Huis ten Bosch Palace and the only other 17th-century domed hall in the Netherlands.

Monument Property is undergoing a large-scale restoration, restoring and preserving the house and garden. After that, Buitenplaats Trompenburgh will permanently open to the public so that everyone can experience this special heritage. The garden will be freely accessible.

Restoration of Trompenburgh Estate

In 2020, Monumentenbezit started the restoration of Buitenplaats Trompenburgh. Watch a number of videos focusing on different parts of the restoration, including the restoration of the paintings of the dome room and making the buitenplaats more sustainable.

Old Wassenaar Castle

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