At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

This church carved into the rocks is full of enchanting stone statues.

A series of abstract sculptures pop up from an otherworldly volcanic landscape.

Extraordinary sculpture garden created by an eccentric English poet.

A 30-acre garden inspired by the principles of modern physics.

This enchanting mountain plateau celebrates spooky local folklore.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

Enormous sandstone towers loom within a Czech forest.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

Two monstrous faces loom over a village in Czechia.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

This Russian religious complex is a Frankenstein's chapel that includes influence from almost all the major faiths.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

Its tremendous toad is actually a five-story museum and viewing platform.

For centuries, this large Roman villa remained hidden thanks to the eruption that buried nearby Pompeii and Herculaneum.

A musical instrument played by the sea.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

A mesmerizing wonderland of salt-encrusted tree branches and pencil roots.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

Ancient structures used to make and preserve ice in the deserts of Persia.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.