The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

At this research institute, the chile is king.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

The Grand Canyon of Texas.

The canine-themed book collection claims to be Europe's largest dog library.

This secluded walkway overlooks a magnificently wild London green space.

Every hour on the hour a naked heroine and her leering foil appear from this giant cuckoo clock.

The last resting place of the famous Native American princess is marked by a haunting monument.

One of the shortest streets in York has an especially odd name.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.

This ruined 15th-century hermitage is steeped in myth and mystery.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

This museum inside a museum tells the story of London's timepieces.

This surreal art house looks like a geometric version of a small chapel.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.