A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A crumbling hospital from the 1850s on Roosevelt Island.

This deceiving white sand beach gets its brilliant hue from the chemical discharge of a nearby factory.

This abandoned Brutalist treehouse is a hidden architectural relic.

This lurid German fountain plots the sad course of marriage from dating to death.

The largest brick bridge in the world.

Living trees form the structure of an open-air palace.

"The most colorful grottoes of the world.

A Neolithic celestial calendar standing in a nondescript wheat field.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

Where the interconnection of German power grids should be.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A wunderkammer of exoticism immortalized by Tom Waits.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

The only microgravity tower in Europe can produce nine seconds of weightlessness.

An intricate and amazing house built by architect Karl Junker.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

An industrial relic is now one of Europe's most staggering art spaces.

An abandoned underground bathroom is now a space for public art.

Twisted buildings adorn the banks of the Rhine river.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.