This lakeside bunker complex in Mamerki, Poland, housed the Supreme Military Command of Nazi Germany during World War II.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

The former headquarters of history's oldest megacorporation.

This cheese shop also houses a museum devoted to Dutch dairy.

The powerful party began with a secret meeting in this shikumen in 1921.

The birthplace of modern China.

This grand temple complex from the Old Silla era of Korea is home to a stone pagoda that was build in the 7th century.

Visiting this grotto is symbolic of a spiritual journey into Nirvana.

The largest and oldest brick pagoda in Korea.

Enormous sandstone towers loom within a Czech forest.

Walk through Czech history in Prague's largest graveyard.

Massive series of 45 caves and over 51,000 sculptures carved from cliffsides in China.

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.

These mountain hot springs have seen power struggles, doomed romances, and a generalissimo's attempted escape from mutiny.

Although resembling a grand Buddhist temple, this structure is actually the largest mosque in China.

An ancient fortification lives on in this Chinese city.

An out-of-place slice of France, smack in the middle of Shanghai.

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

An collection of Chinese propaganda posters from 1949 to 1979.

This Tang Dynasty behemoth is the biggest Buddha in the world.

This psychedelic tourist trap is a leisurely descent into madness.

A traditional village rooted in the Joseon Dynasty.