This led to protests by local union members, during one of which, on June 5, 1972, the construction site was firebombed. The construction was highly controversial, because Altemose chose to use non-union workers. The casino complex originated as a mixed-use development called Valley Forge Plaza, constructed by developer J.
It was constructed on the existing site of the Valley Forge Convention Center and opened on March 31, 2012. Valley Forge Casino Resort is a casino in King of Prussia, Pennsylvania.