A palatial complex in Hillerød, built as a royal residence for King Christian IV of Denmark-Norway in the early 17th century, replacing an older castle acquired by Frederick II and becoming the largest Renaissance residence in Scandinavia. Situated on three islets in the Slotssøen, it is adjoined by a large formal garden in the Baroque style.

After a serious fire in 1859, the castle was rebuilt on the basis of old plans and paintings. Thanks to public support and the brewer J. C. Jacobsen, the building and its apartments were fully restored by 1882 when it was reopened to the public as the Danish Museum of National History.