Built from enormous uncut boulders—one of which is said to weigh 100 tons—Central Park's Huddlestone Arch is supported not by mortar, concrete or metal but by gravity and friction alone. Read more.
Built from enormous uncut boulders—one of which is said to weigh 100 tons—Central Park's Huddlestone Arch is supported not by mortar, concrete or metal but by gravity and friction alone. Read more.