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

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

The ghost town that ended up on Ebay.

The dramatic upward-curving roof is one of the most iconic examples of Googie architecture that still stands today.

A roadway designed for a visiting monarch.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

This mundane post marks the old location of the city's main postal hub.

The remnants of a facade from a 19th-century market stall emporium.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

Harry Potter’s Hogsmeade Station is also a charming blast from the past situated in North Yorkshire.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

Thousands of turbines whir at the origin of North American wind power.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

The location of a citizen uprising that led to a gruesome act of mob justice.

Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

These wooden pipes were crucial to providing water to Medieval Edinburgh.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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