Drink and dine in a coral cave that's at least 120,000 years old.

Singapore's landscaping project is home to 18 incredible Supertrees.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A monument to the man who almost killed Hitler.

A sculptural commentary on capitalism pokes up from the East River.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This poignant display is now a memorial to these regionally extinct species.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This sidewalk tribute honors Colorado's great culinary creation.

A technicolor place of worship for Elevationists.

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

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

France's most famous cemetery, with some of its most curious tombs.

A museum of magic with a Sadist past.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

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

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