Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Mysterious craters may have been home to an ancient cult.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

Two monstrous faces loom over a village in Czechia.

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

Europe's second largest ossuary wasn't discovered until 2001.

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

Real bones which are said to have belonged to a Polish dragon.

An abandoned colonial French prison notorious for its hellish conditions.

The first declared National Monument in the United States.

Half of a waterfall goes into the river while the other half seems to disappear.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

The footprint of a frustrated devil in Munich's Cathedral.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Sculpture park built by a 50-year-old widow.

A hand-built folk art installation covered with messages of God's love.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.