The World Museum of Mining, located in Butte, Montana, is dedicated towards preserving the history and cultural heritage of the city's mining industry. It was established in 1963, less than twenty years before the mine on the site, Orphan Girl, closed. The mine was in operation for a century and it earned the reputation as one of the world's most productive copper mines in history. The museum is one of the few mine museums located in a mine yard. Visitors can tour the fifty exhibit buildings on the site and tour the mine. A recreated mining town is also on the site.