An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Surreal riveted sea forts once protected the Kent shores from German attack.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

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

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

An eclectic trailer park retreat in the middle of the California desert.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

Rainbow-hued local gem in Venice.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

A hands-on traveling collection of the innovative devices of yesteryear.

The ghost town that ended up on Ebay.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.