Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

A meteorite-bounded town in Bavaria.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

This splendid tomb may look fantastic, but there's nothing in it...

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

A small but immensely extravagant palace built by the "Night King."

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

A museum which takes visitors to the côté obscure of Paris.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

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

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The curious underground history of keeping Paris clean.