An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Illegal drag racing two stories beneath Chicago’s streets.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The palatial McDonald's that inspired Wesley Willis.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

The Bong-area park police have asked visitors to please, stop stealing the signs.

A science teacher's dream.

The headquarters of the semiconductor giant has a 10,000-square-foot museum.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

World's second largest particle accelerator, where nature reveals its secrets.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

The final resting place of the world's first nuclear reactor.