Picturesque intersection of witchcraft and ancient Christianity.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Where the lovelorn find a home for their sentimental keepsakes.

An ethereal glowing blue ocean cave in Croatia.

Elaborate tile work in this railway station tells the story of Portugal.

Three columns of volcanic rock shoot out of the ocean.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

This historic observatory contains the world's oldest refracting lens telescope.

Come for the flowers, stay for the bats!

Berlin's old airport.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

The curios of pharmacist and collector Henry Wellcome.