The National Art Gallery as well as the National Museum are located in Vaduz. The art gallery (Kunstmuseum Liechtenstein) is a museum of modern and contemporary art, also showing displays from the private princely Liechtenstein Collection, the main public display of which is in Vienna. The building is an architectural landmark built by the Swiss architects Morger, Degelo and Kerez. It was completed in November 2000 and forms a "black box" of tinted concrete and black basalt stone. The museum collection is also the national art collection of Liechtenstein. The Liechtenstein National Museum is showing a permanent exhibition on the cultural and natural history of Liechtenstein as well as special exhibitions. There are also the Postage Stamp Museum and a Ski Museum.