A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The celebrated eyesore created by starry-eyed sweethearts.

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

Paris' linguistic guide to the international language of, yes, love.

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

A little sculpture with a large wardrobe.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

Colorful and chaotic stacked hotel in North Holland.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Macabre astrological automaton clock dating to the late 1400s.

Looming communist pillar with a Czech twist.

An underground city of salt.

The relics are stored in a silver reliquary, where they can be seen through glass.

Museum dedicated to "the man who moved the Earth."