A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

"I did this all while you were watching TV."

A hand-built folk art installation covered with messages of God's love.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Nature's biggest mammal swims in landlocked Oklahoma.

Roman ruins top white travertine terraces formed by ancient hot springs.

The remains of a sunken military ship wreck visible through clear water.

An ethereal glowing blue ocean cave in Croatia.

The world's largest bioluminescent area was undiscovered by science until 2005.

Bioluminescent firefly squid light up this Japanese fishing port.

The world's brightest bioluminescent bay.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

A gallery of underwater art that can be visited by man and fish alike.

A spectacular cave and a beguiling lake.

Gutted airplanes slowly decay in a Florida field.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A Rodeo for Prisoners.

An emerald-green grotto just a short trip from Austin.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A mysterious drive-in nestled in the forest that leaves little to the imagination.

Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

The crumbling remains of a 19th century fortess.