Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

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

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

This ancient Chinese observatory still contains early astronomy technology.

Ming Dynasty necropolis raided during the Cultural Revolution.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Two nearly identical Chinese pagodas stand side by side, along with ancient stone relics.

The site where the famous city gate once stood, now in the middle of a playground.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

When this massive wooden temple ran out of rope, they made one out of devotees' hair.

Burial mound for the ears and noses of thousands of mutilated Korean soldiers.

A shrine contains nearly 200 statues of the Buddhist deity Jizo, dressed in bibs by parents who have lost a child.

The quintessential Japanese rock garden has existed for more than 500 years.

1,001 carved statues of the Buddhist God of Mercy, each with a unique face.

The 10,000 Torii shrine.

South Korea's largely symbolic, barely used gateway to the North.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

Home to more than 13,000 pieces of war memorabilia and military equipment.

Numerical symbolism abound at East Asia's oldest observatory.

The 400-year-old remains of the samurai invasion of Korea.

Over 80,000 carved wood blocks make up one of the world's oldest intact Buddhist canons.

A chilling monument to Korean patriots who resisted the Japanese occupation.

Secret North Korean passage discovered below the world's most dangerous border.