This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

A musical instrument played by the sea.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

An abandoned tuberculosis hospital said to be haunted by the patients who died within its walls.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

This giant sculpture made of trash is a critique of society's wastefulness.

Ancient catacombs form the foundation for this Rococo orgy of a church.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

This small beach park is littered with a collection of unique driftwood sculptures.

Beautiful mostly-abandoned town only accessible by sea-worthy boat or plane.

This vast, pristine wilderness is home to a rare subspecies of black bear.

Unlike many reclaimed, abandoned mines, this Canadian cave system is still just a dangerous maze.

Hauntingly beautiful totem poles left by the Haida.

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

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

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

Historic psychiatric asylum and most-filmed location in the Great White North.