In a time before lifeguards, this house was a sanctuary for the shipwrecked.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

This feline raises a friendly paw at drivers barreling toward the freeway.

Where the oil industry began.

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

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

No one knows how many bodies are in this vault in a Chicago public park.

G.V. Black, the Father of Modern Dentistry, keeps an eternal eye on Chicagoan’s teeth from his perch in Lincoln Park.

All of Chicago's wood-paved streets are long gone but two alleys remain.

Illegal drag racing two stories beneath Chicago’s streets.

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

This midcentury chapel is a bold architectural statement and a symbol of Indiana's Lutheran heritage.

"Where the ducks walk on fish."

Covered in tens of thousands of coats of paint, this Indiana attraction holds a world record all its own.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

Turnip-shaped island just off the Michigan shore in Lake Huron.

Ancient petroglyphs discovered only after a massive fire swept across Michigan in the 1880s.

World's largest Christmas store.

A place for ship-lovers to watch the passage of freighters traversing the Great Lakes while learning about their history.

A park and memorial dedicated to the victims of the deadliest school massacre in American history.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.