World War II-era Nazi compound nestled in the Santa Monica hills.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Henry Ford's failed rubber plantation in the middle of the Amazon rain forest.

London's Victorian Tower of Babel.

A once grand hotel is being retaken by the wilderness it once capitalized on.

The Hudson River School comes alive at this palatial estate.

A bay of elaborate, historic toilets are held in high esteem at this Scottish dock.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This hidden natural fountain issues forth a steady supply of supposedly healing water that tastes like rotten eggs.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

This historic Victorian hotel has a scandalous history of affairs and murder.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

London's smallest police station is barely the size of a phone booth.

A mysterious artist-run cabinet of curiosities and library.

Fighting the British and making game shows for over 150 years.