The Cornerstone Hall of Freedom was added to the House of the Temple to commemorate the bicentennial Masonic reenactment in 1993 of the laying of the cornerstone of the U.S. Capitol. The stone used during the ceremony, a perfect 18-inch cube, serves as the exhibit’s centrepiece. The display also includes other memorabilia from the event including a photographic collage, a replica of the engraved silver plate affixed by George Washington under the original stone, a copy of an 18th-century Masonic apron, and a print of the painting, “George Washington Laying the Cornerstone of the U.S. Capitol, Sept. 18, 1793,” by Ill. John D. Melius, 33°.