Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

One-layer pyramid in Indiana.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A salty cave excavated by elephants and the location of a deadly disease vector.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

A suspended garden, now gone, once hung in the middle of this abandoned church.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

Where beautiful signs live on forever.

An abandoned relic of the city's failed experiment with below ground transit.

A miniature world of concrete and stone in Springfield, Ohio.

A real flying saucer, contracted by the U.S. Air Force.

A castle built by an eccentric medieval enthusiast in rural Ohio.

An enormous, inside-out glass globe built in 1935.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Monasteries on rock pillars, once accessible only by frayed ropes.

An intricate and amazing house built by architect Karl Junker.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Mysterious rocks that ring musically when struck.