A tiny piece of the Moon is embedded in this stained glass masterpiece.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

A house carved into a rock in the 1940s.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Northern Ireland's Brobdingnagian stepping stones.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

The highest bridge in America was built for an almost unnervingly small amount of money.

When ecosystems collide in the arid Southwest.

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

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

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The atmospheric road was never meant to be so creepy.

Hear the quietest sound from across the dome.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A museum dedicated to the alleged Roswell Incident.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.