This remote castle was built to be a wealthy businessman's palace of vice but is now simply a historic vacation cottage.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.

This surreal art house looks like a geometric version of a small chapel.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

The haunting peak of an old church is all that remains of a drowned Brazilian city.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

The trials and tribulations of marking Poe's grave.

A collection of huge Pre-Colombian structures in Alabama.

This Mississippi seminary was the first in America to train Black Catholic priests.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.