Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

An homage to everyone's favorite prehistoric cartoon family.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A hotel and restaurant serving as the mecca of kitsch.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

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

Famously misunderstood wonder of the ancient world

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Medicinal spa created with the discharge from a geothermal energy plant.

Yo, Adrian!

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A display of magnificent stained glass windows is the first exhibit of its kind.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A striking 12th-century-style castle built on the edge of a cliff.