One of the world's largest Tesla coils.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

An abandoned colonial French prison notorious for its hellish conditions.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

"The country that ate itself."

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

The Voodoo Superstore of the world.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

This once luxurious Catskills resort is now a haunting ruin.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

This abandoned airplane hanger is said to have once been a top secret launch facility.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

The most alien-looking place on Earth.

A city built from mud and known as the "Manhattan of the desert."

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.