This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

Notorious artist squat renovated into legal studios.

An unusual sand beach in the middle of a forest.

Museum in a swimming pool where the water still flows.

Folklore and history carved into Brittany's coast.

An unusual, funny and fantastic open air museum.

World's largest cave was only discovered in 1991, and now offers tours to the public.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

Beautiful carved tunnels.

Figures of unknown origin carved into the surfaces of underground caves.

An aluminum skeleton brings Chinese mythology to the French shore.

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

A cityscape of burial tombs that you can easily lose yourself in.

An extravagant monument to an extravagantly unpopular Emperor.

Walk through a clothing store, across a courtyard, and up several flights of stairs for delicious coffee with a side of beautiful views.

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

This crack in France's seaside cliffs once hid a sinister secret.

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

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

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

This beautifully preserved Ottoman house is steeped in history.

A naturally beautiful, seemingly bottomless deep blue spring.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.