Is this a portal to another side of the cosmos?

A breathtaking viewing platform over the Alps.

"World machine" built by an untrained Austrian farmer.

The shell of a medieval fortress offers commanding views of the area it once protected.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

Each year melting snow turns these Austrian hiking trails into scuba zones.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The ruins of an abandoned cemetery are among the last remnants of the old village of La Boulaye before a wealthy landowner had it relocated.

On the grounds of a former estate in Burgundy stands an elaborate temple that is modeled after the first Tibetan Buddhist monastery.

Erosion left these fascinating granite formations strewn across fields and mountains in Burgundy.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

Rebuilt remains of a temple to Roman god Mithras.

Enormous underground chamber built to detect 'ghost particles' of the universe.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The haunting peak of an old church is all that remains of a drowned Brazilian city.

A fiery crater has been burning in the Karakum Desert since 1971.

Two monstrous faces loom over a village in Czechia.

Bioluminescent firefly squid light up this Japanese fishing port.

These eerie outliers of the lightning bug family glow a mysterious blue color.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Bioluminescence in the reefs of the Maldives causes the sea to glow like a starry night sky.