A bit of retro transportation flair preserved in the world's largest department store.

A museum dedicated to the alleged Roswell Incident.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This is one really big nut.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Two thousand artifacts from around the world collected by one woman who loved to travel.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

A sharp bend in a dramatic river canyon cut through red rocks.

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

The smallest post office in the United States is no bigger than a broom closet.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A bygone village occupation lives on via this quaint public chalkboard.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

It's not a typo, now say it five times fast!

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The site of Paul Revere's historic two lantern warning.