The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

This Himalayan airport provides one of the most difficult landings in the world.

Deep in the Thar desert, a temple crawling with thousands of holy rats.

The world's largest Tibetan refugee settlement.

This experimental utopian "city of the future" in rural India may hold a dark secret.

World's tallest monolithic statue has served as a pilgrimage site since its completion in 993 CE.

Modest by day, illuminated majestically at sunset.

An ancient iron pillar in Delhi that seems to be rustproof.

A blooming house of worship for the masses.

The world's second-largest sundial, made entirely out of stone.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

A complex of six forts embedded in the Rajasthan hills.

The remains of what was, not so long ago, the world's largest city.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

Half-size replica of the Taj Mahal.

Rock-cut cave complex filled with ancient Buddhist artwork.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Metro station with a claim to rock n' roll fame.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Cold war icon and onetime "hole" in the iron curtain.

The most visited, and possibly most controversial, museum in Germany.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.