A private collection of massive steel monsters guarding a Texas pipe works.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

A taste of Middle Earth, in the middle of the Bayou City.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

Fantastic collection celebrating the final send-off.

The dishes at this restaurant by The Sioux Chef celebrate indigenous heritage.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Yo, Adrian!

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Tucked away in a downtown Stockholm park are the remains of a World War II defense position.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

Dine inside a giant caterpillar at this community-run eatery.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Disused penal colony features prisoner artwork, some sketched in human blood.

This abandoned hospital is one of the most haunted places in Costa Rica.

Once the foundation for a mansion, these ruins now offer amazing panoramic coastal views.

It was meant to help transport wounded soldiers to a secret underground hospital.

Stockholm's deepest subway station is also a stunning ecological wonder.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Though they may seem like simple stones, these rocks represent a ghostly legend.