Rock-cut cave complex filled with ancient Buddhist artwork.

Half-size replica of the Taj Mahal.

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.

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

World's most expensive home.

Billionaire's mark on the earth.

Feed it cash, get your very own gold bar.

The largest falcon hospital in the world, caring for over 6,000 feathered patients every year.

Whitewashed mosque contains the world's largest carpet.

Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.

This indoor ski resort has a mountain contained inside a mall.

If you are looking for a used Russian battery, Chinese Ham Radio or other electronic oddities this Flea Market is a good place to start.

Spiral labyrinth hidden in the hills above Oakland, CA.

Junkbots and mud babies are the masterpieces in this fantastically sci-fi art museum.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Home to the "Circus" trees created by Axel Erlandson.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

This large collection of tiny things revels in the art of fine machinery well made.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

A music-filled, booze-soaked oasis in the desert.