This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A floating cat sanctuary on an Amsterdam canal.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Cemetery featuring rare glass-fronted columbarium.

Moonbows over Kentucky.

This downtown Dallas art installation is always on the lookout.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

A spiritual vortex among the red rocks in Sedona.

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A geological mystery on Camelback Mountain.

The unusual burial monument of Arizona's first governor.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Stairs often replace streets on the steep slopes of this old mining town.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.