Wagner Free Institute of Science /

The Wagner Free Institute of Science is a natural history museum located in Philadelphia, Pennsylvania. It was founded in 1855 by William Wagner, a notable merchant, philanthropist, and gentleman scientist of the time, who sought to offer free educational courses to all who would seek to learn about the natural world. Wagner began offering free lectures on science at his home, Elm Grove, a colonial farm estate on the outskirts of Philadelphia in 1847. To illustrate the lectures he drew on a collection of specimens he had gathered since his boyhood. All of the classes were offered with an open admission policy that allowed women as well as men to attend. These lectures became so popular that by 1855 he moved them first to a public hall to accommodate the rapidly growing audience, and later to its permanent home designed by Philadelphia architect John McArthur, Jr., who would go on to design Philadelphia's City Hall. Wagner continued to lecture and to lead the unique institution until his death in 1885. The Board of Trustees then appointed Joseph Leidy, a biologist of international reputation, to head its scientific and educational programs. Leidy's appointment ushered in an active