The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A unique Tuscan hideaway acts as an art mecca as well as a hotel.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

Not a single witness can attest to the creation of the world's largest geoglyph.

A giant Australian fruit and tropical farm.

A huge maze complex and whimsical miniature village in Tasmania.

A series of eerie metal stick figures are spread out over four square miles on the bed of a huge salt lake in the Australian Outback.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

Panorama exhibition hall in old silent theater with a beautiful backyard garden.

Where beautiful signs live on forever.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

The largest greenhouse in the world is home to over one million types of plants.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

A madman's personal garden filled with 1,000 sculpted heads.

These Australian rock formations look like Martian beehives that have grown up out of the landscape.

An abandoned marine theme park has created a difficult experiment in dolphin rewilding.