Executions were once held near this beautiful 18th-century fountain.

A strange rock formation with numerous legends trying to explain it.

The "Prussian Versailles" that is as glorious today as when it was built.

Ruins of a German Castle on top of a towering stone pillar.

This overgrown mountain village has been abandoned for nearly a century.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

This massive library holds what was once the largest book collection in the world.

Abandoned railway line circling the city of Paris.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.

The wreckage still sits at the exact spot the plane crash-landed in 1945, carrying 1,000 pounds of explosives.

Locals transformed this Canadian evergreen into a secret hangout with spectacular views of Vancouver's skyline.

The remains of a Canadian train crash are now mouldering beneath layers of rust and graffiti.