Stadtschloss, Wiesbaden, the former residence of the Dukes of Nassau and current seat of the Hessian parliament
During the Renaissance the city became a notable spa town, and Philipp Ludwig III commissioned construction of a New City Palace, completed in 1599.
In November 1918, the Spartacist leader, Karl Liebknecht, declared the German Socialist Republic from a balcony of the Stadtschloss, ending more than 400 years of royal occupation of the building.