Virginia, USA, has a Stonehenge of its own, built from Styrofoam. This full size replica was built by Mark Cline of Enchanted Castle Studio in 2004, with the pieces in astronomically correct positions. Lest somebody mistook it for the real thing, a sign at the base of the hill cautions: "Please be gentle. It is foam, not stone."
"About 15 years ago I walked into a place called Insulated Business Systems where they make these huge 16-foot-tall blocks," Mark, a fiberglass sculptor, told Roadside America. "As soon as I saw them I immediately thought of the idea: 'Foamhenge.' It took a while for the opportunity to present itself, of course."