This unreal Portuguese palace looks as though it's made from a pile of different castles.

Houses are tucked between, on, and underneath giant boulders.

A small Portuguese cottage formed between boulders in the countryside.

A submerged village appears when dam levels drop.

Stay in your own little bubble.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

On the Oregon coast there is a natural hole that seems to be draining the sea.

In 1830, cemetery workers in Cham unearthed a chamber housing thousands of skeletal remains from the 13th century, which can still be viewed today.

The mystery of the Putim Ossuary involves a tricorn hat.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

This former quarry is now a picturesque gorge that hides a sunken lake.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

An underground magnet for ever-changing street art.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Mummified monks and the accidentally interred, in a 17th-century crypt.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A giant Troll lurks under one of Seattle's oldest bridges.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

The hottest place on the planet.