The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Less a museum than a bizarre fantasy world created by artists and engineers.

This is not your typical jungle gym.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

An oversized metal construction of Billy Tripp's moods going through life.

Home to drunken tower-climbing goats... seriously.

Walk the whole Mississippi River!

A bizarre house filled with an astounding array of collections.

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

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

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