This modest marker near Notre Dame identifies the very center of Paris.

France's most famous cemetery, with some of its most curious tombs.

The timeworn "Yankee Stadium" of the fastest game in the world isn't going anywhere.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

It turns out that a hurricane-prone beach is probably not the best place to house wild animals.

Located within a historic park, the beacon is the oldest standing structure in Miami.

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

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

This beautiful Miami garden was designed as a laboratory for tropical plants.

A community of collapsing homes more than a mile out from the Florida coast.

A perfect circle of 24 mysterious holes dates back to prehistoric times.

Where monkeys run wild and the humans are caged.

This historical swimming pool near Miami is emptied and refilled each day with naturally filtered water.

An underwater city for the dead.

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

An abandoned water sports stadium that has become a haven for graffiti and decay.

Buffalo's abandoned concrete grain elevators are getting a second life.

This former hub for crafty philosophers was founded by a writer who died aboard the infamous RMS Lusitania.

This restored house is like a time capsule of the president's unconventional inauguration.

An elaborate memorial to a man local legend says died of a broken heart.

A 19th-century architectural wonder designed by the "father of the skyscraper."

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

The seat of Buffalo government is a gorgeous Art Deco palace.

This sprawling collection of saintly relics includes such fascinations as wood from the Cross of Jesus and threads from Mary's veil.