A marvel of Byzantine engineering under the streets of Istanbul.

Tracking the 1,500-year history of Korea's star cabbage.

This historic square in Nepal is home to temples dating back to the third century.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.

Come for the flowers, stay for the bats!

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

Its incredible collections are dedicated to preserving Mexico's film history.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A blooming house of worship for the masses.

This church was transported brick by brick from the ruins of a 16th-century city into Panama City's current historic district.

Sloth rehabilitation center in the jungle of Costa Rica.

A crumbling cathedral condemned by an earthquake.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Climb to the top of the world's largest seated bronze Buddha.

The final resting place of 19th-century sailors previously banned from being buried within Portuguese Macau.

The embalmed remains of the communist leader lie within a custom crystal coffin.

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

Established hundreds of years ago, Gandan remains the premier Buddhist monastery in Ulaanbaatar.

Striking, enormous gold-plated sculpture of Buddha installed in the 19th century.

The bank's whimsical shape was inspired by a child’s toy.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

A battle between nature and architecture in the Cambodian jungle.