In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This corn maze so big you may want to pack a lunch, and possibly a flaregun.

Seven ceramic sculptures are scattered around this California college campus.

Special tunnels built so that frogs won't be killed when crossing the highway.

A giant chess set, minus the psychedelic drug trip.

It is locally loved and ridiculed for literally looking like poop.

Quite simply the largest tree in the world (by volume).

This super steep hike ascends 2,000 feet in less than a mile.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.