The Pilgrim Monument in Provincetown, Massachusetts, was built between 1907 and 1910 to commemorate the first landfall of the Pilgrims in 1620 and the signing in Provincetown Harbor of the Mayflower Compact. This 252-foot-tall (76.8 m) campanile is the tallest all-granite structure in the United States, and is part of the Provincetown Historic District.