An ancient capital city that dates back 3,000 years old and harbors many surprises.

A crumbling hospital from the 1850s on Roosevelt Island.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Rippling sand dunes frozen in the Arizona rock.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A huge musical instrument played by the ocean.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The former Willingdon Airport started operations in 1929, in India's capital, Delhi. Now, it's used for maintenance runs and helicopter rides.

This restaurant is proud to be built atop a burial ground.

Time has stopped at the house where Gandhi died.

This lavish estate recalls the opulent history of Calcutta.

Scholar, adventurer, saint, and instigator of the Goa Inquisition.

World's most expensive home.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

Half-size replica of the Taj Mahal.

Made by a man on a worldwide sanitation crusade.

Miraculous vase predicts the future at this Tibetan Buddhist site in the Himalayas.

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

The abandoned site of the Beatles spiritual awakening and subsequent revolt.

Siddhartha Gautama sat here and received enlightenment.