A 300-foot-long Cold War submarine floats in a Chilean River as a maritime museum.

A display of hand-built replicas of the legendary vessels used by Patagonian and Antarctic explorers.

The trials and tribulations of marking Poe's grave.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

A bizarre house filled with an astounding array of collections.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

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

This embalmed man is one of the best preserved mummies from the Canary Islands.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.