Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The fifth-longest natural arch in the world, and the longest outside China.

This Moab institution functions as both a rock store and a small natural history museum.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

World War II bunker still standing on the New Jersey beach.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A unique sculpture park that specializes in the huge and bizarre.