The private island of Yale's elite Skull & Bones society is kind of a dump.

This island castle contains enough secret passageways to support a season of Scooby-Doo episodes.

Now a public art piece, this curious metal feature originally advertised a tinsmith's services.

This picturesque abandoned home is rumored to be a spite house.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

One of Mother Nature’s geological gems, home to many prehistoric fossils.

One of the world's largest collections of rare medical texts and ephemera.

This water-locked cliff face is covered in hundreds of ancient pictographs.

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

This famous church is adorned by a mural commemorating the independence of Vatican City.

A patch of contaminated land reclaimed as a scrappy sculptural oasis.

This haunted corpse of a drive-in is now a graffiti-covered ruin.

Thanks to its curved shape, this incredibly durable dam "whispers" to visitors.

This abandoned orphanage-turned-asylum witnessed a terrible chapter in Québec's history.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.

The remains of a paranoid inventor's hidden workshop lie in beautiful ruins amidst a Canadian park.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

This inexpensive lodging house was once a prison notorious for its inhumane practices.

A boardwalk winds above this beautiful bog full of wildlife and a rare type of turtle.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.