Test your business savvy and play the market for cocktails at this stock exchange-inspired watering hole.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

The remains of a Rockefeller's lush Italianate estate hidden in the underbrush on the coast of Lake Michigan.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

This famous archeological mystery may be an ancient example of movable type.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

This historic hotel invented the chocolate brownie.

A source of civic pride, though the reason for its construction is unknown.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

A hollow cement depiction of time's inexorable effect on the human body.