The Iowa Masonic Library and Museum, located at 813 First Ave. SE, in Cedar Rapids, Iowa, USA, is one of the largest Masonic libraries in the world, and incorporates at least three museum collections. The library was the first, world-wide, to have its own building (constructed in 1884). Its current building (constructed in 1955) also houses the administrative offices for the Grand Lodge of Iowa, one of the governing bodies for Freemasonry in Iowa.