The park is home to the United States's only still-operating Dutch windmill.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

World's largest Christmas store.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

This shallow cave got its name from copious amount of human bones found inside.

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

Strange physical sensations and optical contradictions keep visitors coming back for more.

The bones of an old zoo crumbling in the shadow of a new one.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

This sprawling bookstore spans four floors and has more than a million books in stock.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

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

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

Chicago's North Park Village was once the largest municipal sanatorium in the country.

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

An enormous park-like oasis, full of famous Chicagoans' graves.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

A Bibliophile's Dream.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Island where motor vehicles are banned -- home to the only carless highway in the United States.