 Sydney has a range of museums including those based on visual art such as the Museum of Contemporary Art, the Art Gallery of New South Wales, the White Rabbit Gallery, CarriageWorks, Artspace Sydney, the Brett Whiteley Studio; science and technology such as the Powerhouse Museum, Sydney Observatory, Sydney Tramway Museum, Australian National Maritime Museum and Australian Museum; and history such as the Museum of Sydney.The Art Gallery of New South Wales (AGNSW), alongside major collections of Australian colonial and 20th-century art and some works by European masters, has the largest and most important collection of Aboriginal art anywhere in the world.The Archibald Prize for portraiture (Australia's most prestigious art prize), the Sulman Prize for subject/genre painting and the Wynne Prize for landscape painting are awarded each year by the trustees of the AGNSW.