These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Exquisite examples prehistoric bas-relief carvings.

When the rain falls, this drain system turns into a musical instrument.

A museum dedicated to the alleged Roswell Incident.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

France's most famous cemetery, with some of its most curious tombs.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

Frida Kahlo's childhood home, now a museum of her life and works.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

A landscape decorated with enormous skull sculptures.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

"I did this all while you were watching TV."

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A sprawling collection of over 106,000 toys from around the world.

A ghost town revived by hippies and wanderers throws its own special brand of holiday parade.

On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.