Most-visited and most-photographed slot canyon in the American Southwest.

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

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

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The glowing blue Nymphaeum of Emperor Tiberius.

Breathtaking and huge 430 year old maps of Italy.

The yawning maw of this pagan visage is said to bite off the hands of liars.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Despite its name, this route in southern Utah offers a heavenly day trip.

Baroque celebration of the end of the Great Plague of Vienna.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Christ's blood preserved in a Belgian town.

Climb inside an iron crystal magnified 165 billion times its normal size.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A little sculpture with a large wardrobe.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Cozy basement bar sports an inventory of over 2,000 beers.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.