This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A naturally mummified 2,000-year-old man.

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

Indents in the pavement are all that remain from a grisly death machine in Paris.

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

Site of a classic 19th-century physics experiment to prove the earth is rotating.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

A Nesting Doll of Churches.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.