Slot Assumburg (Assumburg Castle) is originally dating back to the 13th century, but it was rebuilt in 1546 by Gerrit van Assendelft. Since then the castle has been only a manor for several noble families. Although it looks very impressive it was - due to thin walls - not suitable for defensive purposes.

Slot Assumburg is all about appearances. When it ws built in the mid 16th century the role of castles in the Netherlands as defensive strongholds was over. Castles were still being built, but only as comfortable homes. But to show off his power, status or descent the builder of Slot Assumburg gave the castle the current look.

In 1694 Amsterdam regent, merchant and banker Jean Deutz acquired the castle. Besides a huge restoration of the building he also created a wonderful symmetrical baroque garden. In 1729 a copper plate of the garden was made. Between 2001 and 2011 this original copperplate was used by the designer of the current garden. Today, the garden is open for visitors and can be visited free of charge.

Since 1867 the castle was abandoned until 1911 and almost ruined. Slot Assumburg became a youth hostel and most probably it is still the most beautiful/remarkable youth hostel of the Netherlands.