This recessed garden protects thousands of mountain plants by creating its own microclimates.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

This professional clown's home is an outsider art wonderland.

The sunken structure looks like the victim of a catastrophic flood.

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

This massive blockhead sculpture hides an entire library.

The unique design of these skyscrapers in a Paris suburb led to them being nicknamed "cloud towers."

Avant garde house of Pierre Cardin on the Cote d’Azur.

These quaint French houses dangle precariously over a precipice.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

Science fiction's grandfather has a fittingly marvelous tomb.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

France's most famous cemetery, with some of its most curious tombs.

This tangled English forest looks like something right out of a fairytale.

A wonderful safe haven founded in the 1960s to rescue endangered monkeys from the pet trade.

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

400-year-old garden, restored to beauty.

An architect transformed this abandoned cement factory into his castle-like workshop.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

A breathtaking flower tunnel bursts with beautiful golden blossoms.