A rainbow of kulfi and falooda flows from this Indian-style ice cream parlor.

The steepest classic funicular in the world glides along a dizzying incline.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

Bell tower juts out from a village buried under a lake.

A tower-like theater in the Swiss Alps built to withstand the high winds and avalanches of the mountain pass.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Artist and musician Will Menter creates musical sculptures.

100-windowed castle turned art gallery, built by one dedicated mason.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

Sleep in a climate-controlled plastic bubble for the night.

This tiny hotel perched atop a 50-foot tower really puts things into perspective.

These rustic holiday homes are made from discarded fishing boat hulls.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

Got apples?

One woman's decades-long obsession with the "La Fée Verte."

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

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

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

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

This massive library holds what was once the largest book collection in the world.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.