As the largest museum in Alaska, Anchorage Museum, a community-based institution exhibits art, history and cultures of Alaska. Visitors enjoy the history and science galleries as also the Smithsonian Arctic Studies Center having more than 600 native Alaskan objects. There is also the Imaginarium Discover Center and the museum is home to the Sydney Laurence classic Mount McKinley painting. The Anchorage Museum of History & Art began as a public-private partnership to celebrate the 100th anniversary of the 1868 purchase of Alaska from Russia by United States. Its mission remains to collect, preserve, exhibit and interpret cultural materials illustrating art and history of Alaska and the circumpolar North. A major section is composed of large collections of Eskimo and Aleut materials donated to Cook Inlet Historical Society in 1955 that became the core of the collection when it opened in 1968. The largest component of the museum’s collections is its Alaska Native collections.