A house carved into a rock in the 1940s.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

An off-grid art installation that encourages its visitors to imagine a world without waste.

A hand-built folk art installation covered with messages of God's love.

Version of the French Riviera destroyed by the sea.

At this deceptively beautiful beach, nothing is what it seems.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Turning night into day in Victorian-era Austin to thwart a serial killer.

One part antique store, one part curiosities hodge-podge.

A Prada store in the West Texas desert that is never open for business.

The largest collection of historical roller skates in the world.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

The land is home to swimming ponies and a legendary 18th-century treasure.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

This small museum in a 17th-century building honors three iconic Scottish writers.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The oldest continuously inhabited street in America.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.