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

A lavish 16th-century mansion filled with spectacular staircases, fantastic frescoes, and gorgeous gardens.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

This 16th-century monastery has been turned into a surrealist architecture compound.

This outsider art house has gone from clinical creation to astounding artwork.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

An enormous and lavish Gothic church in Czechia.

A church of bones, decorated with 40,000 human skeletons.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Dine amidst exotic plants at this former royal greenhouse.

Baroque celebration of the end of the Great Plague of Vienna.

The world's most active stratovolcano is almost always erupting.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Italian cave with exceptional acoustics and an unsavory history.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

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

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

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

A museum of carnival attractions where you are invited to ride the rides.

This Parisian café is dedicated to great tea and the art of knitting.

BDSM, 1930s Style.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.