The four-winged palace originated from a medieval castle and was expanded over several centuries into a Residenz.
The castle originally belonged to the Lübeck prince-bishops; later it became the summer residence of the Dukes of Oldenburg.
The former Baroque garden was converted during the 18th and 19th century to a landscaped park: this is the venue for the Eutin festivals.
A small, late Baroque hunting lodge on the Ukleisee belongs to Eutin Castle.
The lodge was built in 1776 at some distance from the main castle at the behest of Frederick Augustus I of Saxony in order to provide a single-storey pavilion for hunting parties and guests attending special occasions.