The Kronprinzenpalais (Crown Prince's Palace) is a landmark late classical-style building at one end of Unter den Linden in Berlin. It was a palace of the ruling Hohenzollern house of Prussia until the abolition of the monarchy at the end of World War I. It then became an annexe of the Berlin National Gallery, housing a preeminent collection of modern art. It was closed by the Nazis and the building was destroyed in World War II. It was rebuilt in 1968 and used by East Germany as a guest house for official visitors to their capital of East Berlin. Since German reunification it has been used for exhibitions and cultural events.