A misunderstanding gave this 18th-century racehorse a most amusing name.

This medieval mountain town is also known as the "Village of Streams."

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

A prison tower–like edifice honoring a beloved local benefactor.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

Led Zeppelin wrote some of their most iconic songs at this little 18th-century Welsh cottage.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

At high tide this strange footbridge appears to have no purpose whatsoever.

This isolated island is often capped by its own fluffy cloud.

The blinking light atop the iconic landmark has been sending secret messages for decades.

A reproduction of earth's many biomes.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

The world-record holder for the longest bridge stretching continuously over water.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The world's brightest bioluminescent bay.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

An enormous, inside-out glass globe built in 1935.