A museum is a building or institution which houses and cares for a collection of artifacts and other objects of scientific, artistic, or historical importance and makes them available for public viewing through exhibits that may be permanent or temporary.

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Modern museums concentrate on a particular subject or field, such as fine arts, applied arts, archaeology, anthropology, ethnology, history, cultural history, natural history, science and/or technology. Some specialize further, such as museums of modern art, local history, aviation history, agriculture, geology, etc.