This jagged colossus of a building is mostly held together by an enormous concrete exoskeleton.

A secret door leads to this cozy dive that sells only “milk.”

An incredibly well-preserved piece of ninth-century Viking poop.

Watch cheese-flipping robots in action at this factory and museum.

An inconspicuous footbridge beloved by San Diego locals.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

Edinburgh’s version of the Sistine Chapel is this former church, with an interior covered in paintings done by one woman over the course of nearly a decade.

The hallucinogenic center of the ancient world.

Home to a forest of whimsical pygmy Coast live oak.

Once home to a thriving oil industry, this town now sits eerily abandoned.

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

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

No one really knows how these old hobby horses got here, but the herd keeps growing.

Welsh literary history is preserved in the delicate pages of these medieval manuscripts.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

Once considered one of the country's finest motte and bailey castles.

An ode to Japanese artist Hokusai, with a bit of a comical twist.

Narrow gorges and deep pools created by long-ago glaciers.

On a remote island, legend has it that a fiddler and his wife were turned to stone.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A trio of giant megalithic stones in the middle of a golf course.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.