This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

This architectural wonder of Mexico City houses several art schools and national research centers.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

Visitors to this library are in for a real-world education in modernist architecture.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

A wild west scene starring life-sized wooden statues hides in the trees behind Pierce College.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

If there is one thing you don't want to be in Sweden during Christmas, it's a Yule Goat.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

A black cottonwood gets a second life as a home for books.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

A fantastical bed and breakfast with magically unique rooms.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

Home of the "true" equator.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

A self-built castle made by a mysterious man.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.

Eighteen miniature death-scene dioramas.

A simple stone remembers one of the most menacing horses in the Swedish military.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.