Wiesbaden City Palace is a neo-classical building in the center of Wiesbaden, Germany. It was completed in 1841 as the principal city residence of the Dukes of Nassau. The palace has several wings, 145 rooms, and is architecturally integrated with a group of ancillary buildings constructed both before and after it was built. With ornate towers, gables and a slate roof laid in herringbone patterns, the three-story complex lends charm and its name to the central square of Wiesbaden: Palace Square.
The Palace has had a turbulent history. After withstanding the Revolutions of 1848 and annexation by Prussia in 1866, it has served variously as a second home of the German Emperors, a gathering place for soldiers and workers during the German Revolution of 1918–1919, a museum, and a military headquarters for both the Wehrmacht and Allied occupation forces. Damaged during World War II, the Palace has since been restored and portions modernized. Since 1946 it has been the seat of the State Parliament of Hesse. A new Parliamentary Chamber was added to the complex in 2008.