A giant open-air sculpture made of over 200 full-sized boats.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Dramatic river bend surrounds a natural red-rocked pedestal.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

A lion given to the prime minister somehow got stuffed and sent to Florida.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

It's a pretty creepy lock-up.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A statue honoring 44 continuous years of greeting passing ships.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

America's oldest Italian restaurant is a San Francisco institution.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

The world's first and only museum dedicated to dachshunds.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.