A tunnel dug through the side of a mountain by hand provides convenient yet death-defying access to a small village in China.

This highest bridge in the world spans such a great chasm that it had to be established using rockets.

The largest statue in the world towers at 420 feet high atop another 66 feet of pedestal.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.

Rock-cut caves and 7,000 Buddhist sculptures carved into the nearly sheer face of a sandstone mountain.

A harrowing trail up a mile-high mountain.

A sacred mountaintop temple offers a fine cup of tea to visitors who can survive the journey.

The once highest point in China blends symbolic design with a kick of adrenaline.

An collection of Chinese propaganda posters from 1949 to 1979.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

Hydraulic systems in an ancient underground Iranian city.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.

The toilet-shaped house of South Korea's sanitation pioneer is now a museum to the john.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Ancient structures used to make and preserve ice in the deserts of Persia.

Leave the wardrobes and sweets to British schoolchildren, Shanghai's got a Coke machine that leads to booze.

World's largest collection of serial killer artwork and other macabre exhibits.

A fifth-century temple improbably built into the side of a cliff.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.