A neolithic tomb converted into a tiny chapel.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

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

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Art and armour fill every inch of this rich kid's Italian villa.

Virgil's many-mouthed gateway to the underworld.

A huge enchanting public park just outside the ancient walls of Rome.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectural monsters are devouring this palace's every door and window.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The oldest stone house in Paris was built by its most famous alchemist.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

Come for the bait, stay for the brioche.

This quirky collection is an interactive exhibit crammed with creative contraptions and tinkered-with toys.