This Boeing KC-97 tanker is now a restaurant for aviation lovers.

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 final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

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

The largest self-built castle in the U.S., six decades in the making.

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

A huge musical instrument played by the ocean.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

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

This erect, phallic geological spire wasn't always named so domestically.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.