The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

A wall of chewing gum moonlights as collective art.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A fake Transylvanian castle houses a cathedral of antlers.

The world's largest clay lick, where parrots gather to snack.

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

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

A walk through the historic city center, under the streets of Seattle.

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

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

Turning night into day in Victorian-era Austin to thwart a serial killer.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

The summer home of the largest colony of bats in the world.

Free public park and gardens filled with peacocks and peahens.

Life's work of sculptor Elisabet Ney remains preserved in her last studio.

One part antique store, one part curiosities hodge-podge.

This failed condo development was reborn as a street art hub.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.