A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A Texas museum filled with Broncos and Betties.

A modernist landscape of water and sci-fi concrete.

Where Elvis Presley received his first Army buzz cut.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

The Ozarks' strangest dwelling.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

Peak named for an old man who liked to run in the nude.

Local legend says that someone is buried in the trunk.

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

The mysterious round rocks of Schooner Gulch.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.