A man throwing a giant severed hand towers over Antwerp’s main square.

This marvelous work of outsider architecture is built into the cliffs of an Israeli beach.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

This church carved into the rocks is full of enchanting stone statues.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

A porcelain company's former dumping ground, completely covered in pieces of collectible ceramics.

Astronomical observatory above Lake Titicaca.

People have been scribbling on this massive chunk of granite for more than 1,500 years.

The oceanic dumping ground where spaceships go to die.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

Nicolas Schöffer's massive interactive sculpture was assembled in 1961 and brought back online in 2016.

This icon of the Atomic Age now lays dormant.

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

A Roman temple perched over an Italian town, forgotten several times over.

The haunting peak of an old church is all that remains of a drowned Brazilian city.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.

The most alien-looking place on Earth.

Longest fortress system anywhere in Europe.

This was once the largest city in Kazakhstan, and a major stop on the Silk Road.

A natural rock formation believed to be a cure-all.

America's only city hall with minarets took architectural cues from Ali Baba and the Forty Thieves.

An underwater city for the dead.