Siddhartha Gautama sat here and received enlightenment.

The world's largest secondhand book market is a haven for bibliophiles and bargain hunters.

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

Modest by day, illuminated majestically at sunset.

This ancient Hindu temple is covered in thousands of colorful statues and has a long mythological history.

A complex of six forts embedded in the Rajasthan hills.

Temples adorned with intricate, erotic sculptures make up one of the "seven wonders" of India.

An extraordinary "City of Caves" carved from solid stone.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

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

Rock-cut cave complex filled with ancient Buddhist artwork.

The second-longest continuous wall on the planet protects a hidden secret in the deserts of India.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

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.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

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

This expansive bridge in the Canadian wilderness was originally just built for friends.

This historic Chinese tower was said to have been haunted by fox spirits but is now haunted by a grisly murder.

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

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

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

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

A harrowing trail up a mile-high mountain.

A natural arch offers panoramic views of Yangshuo's karst hills.