The Liberty Memorial is a memorial to the fallen soldiers of World War I and houses the official National World War I Museum, as designated by the United States Congress in 2004. The memorial was completed and dedicated on November 11, 1926. The memorial in Penn Valley Park was designed by Harold Van Buren Magonigle who won a design competition. The approaches were designed by Wight and Wight. Among the sculptors involved were Robert Aikten, Edmond Amateis and John Donnelly. The grounds were designed by George Kessler. The building is designed in a classical 'Beaux-Arts monumentalism', with Egyptian Revival details including two sphinx sculptures.