Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

The experimental test tracks of a retro-futuristic monorail still stand in the French countryside.

The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

A self-built mosaic house and sculpture park.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

Figures of unknown origin carved into the surfaces of underground caves.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

Ethiopian standing stones featuring remarkably preserved carvings of swords and people.

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

The hottest place on the planet.

Giant money stones of Yap.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

An Indonesian mosque styled after St. Basil's Cathedral.

Subterranean place of worship in Indonesia.

This massive chapel in the middle of the Indonesian forest is both haunting and fowl.

Caves full of Buddhist statues, incredible rock formations and a deserted lagoon.

A Buddha-filled cave that is named after a giant monster spider.

Luxurious devotion and 500,000 images of Buddha in Myanmar.