These fantastically named natural pools look like something out of a Scottish myth.

Every September, international competitors flock to a tiny Scottish island's flooded quarries.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.

A stretch of the Iwai River that features beautiful rocky cliffs, rapids, and flying dango.

A stunning two-story timepiece within a medieval Brick Gothic church.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

This German museum devoted to the simple wonders of salt is actually built over an old saltworks.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

This Denmark theme park is part family attraction, part experimental archaeology project.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

This sublime architectural marvel is a rare example of an expressionist church.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

MIT students continue the legacy of beloved professor "Doc" Edgerton through learning by doing.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

Shelves covered in dozens of coffee bean varieties fill this North End institution.

"Mock all and sundry things, but leave the saints alone."

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

Radical Bookstore and Community Space.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.