The Valley Forge Music Fair was an entertainment venue located in Devon, Pennsylvania, outside of Philadelphia, constructed in theater in the round style with seating for 3,000. Initially established in a tent in 1955, a permanent structure was constructed that closed in 1996. The Valley Forge site became a model that led to the creation of a series of venues located in suburban locations on the East Coast of the United States that became a means to present top performers and productions of popular theatrical musicals at reasonable prices outside of the big cities.