Norway's national monument to fallen seamen.

What might look like a cliffside sacrificial altar at first glance is actually a stone compass pointing to cities and lighthouses all around the world.

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

Final resting place of two dozen New York City harbor ships.

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

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

Built during the Scottish boom in the oil industry, the village was never inhabited.

The abandoned village of Skarð aptly illustrates the idiom "Don't put all your eggs in one basket."

This derelict superstructure was a very important warning system for the Soviet military.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

Abandoned waterpark turned counter-culture mecca.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

On stormy days debris from this unfinished and abandoned skyscraper rains down on the Bangkok streets.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

An abused and forgotten metropolis, abandoned for centuries.

This Romanian village may have been drowned, but it is long from forgotten.