America's only city hall with minarets took architectural cues from Ali Baba and the Forty Thieves.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

Former villa and estate of James Deering developed to preserve native tropical forests.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

The first green space constructed on an elevated viaduct.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

The oldest stone house in Paris was built by its most famous alchemist.

This massive library holds what was once the largest book collection in the world.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This Victorian marvel of engineering and artistic prowess is nicknamed the "Cathedral of Steam."

This haunting stone chasm is a hotbed of mossy rock and English legend.

Legend says this little-known stone circle is formed from people petrified as punishment for dancing on the Sabbath.

The gravestone of a delicate singer-songwriter bears a fittingly introspective epitaph.