This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

A trash dump made beautiful by nature's power.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The magic's in the hole!

In this subterranean brick arcade, a small shop continues the ancient practice of bookbinding.

The first park built over a freeway is a brutalist masterwork.

This former coal gasification plant found a curious second life as a popular public park.

A giant Troll lurks under one of Seattle's oldest bridges.

Two graffiti towers stand like ghosts of Vancouver's World War II-era defensive outpost.

The colorful, smiling concrete silos of Vancouver.

An artist’s underground sanctuary, 40 years in the making.

La Cara del Indio honors the Taíno chief who fought bravely against the Spanish invasion of Puerto Rico.

This rock in the middle of a river in Jayuya contains dozens of Pre-Columbian Taíno petroglyphs.

Puerto Rico's once thriving oil company is now an abandoned wonderland of rusty steel.

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.

On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.

Legend has it this historic port was a popular hideout and smuggling spot for pirates.

This former railroad bridge was named after the great river that once flowed below it.

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

This former sugarcane transport tunnel is now a portal to a lovely beach.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

The world's brightest bioluminescent bay.