Paleis Het Loo

Paleis Het Loo stands near Apeldoorn in the province of Gelderland. William III acquired the medieval castle in 1684 and began a new hunting lodge there; by 1686 the central block, colonnades, side wings and garden walls were in place. The complex was enlarged after 1689, when William and Mary became King and Queen of England. Wikipedia names Jacob Roman and Johan van Swieten as the builders, and Daniel Marot is linked to designs for the parterre patterns. The palace remained a summer residence of the House of Orange-Nassau; Princess Margriet lived in the right wing until 1975. It has been a museum since 1984.

The gardens were restored from 1970 to their 17th-century appearance and completed for the 300th anniversary in 1984. One source notes that construction and planting details are less authentic than the layout itself. The orangery holds around 200 citrus trees.

After a renovation, the museum reopened on 22 April 2023 with an underground extension by KAAN Architecten: about 5,000 square metres beneath the courtyard, roughly ten metres deep. Please check opening hours and admission in advance.