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

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

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

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

World's largest Christmas store.

Former self-sufficient mental institution now a planned community.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

The world’s largest Masonic temple was saved by the White Stripes.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

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

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

A lavender labyrinth so large it’s visible on Google Earth.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

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

The only surviving prototype for Buckminster Fuller's house of the future.

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

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

Astounding collection of coin-operated games and automata.

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

Abandoned concert venue legendary for its rock counterculture.

This freshwater spring fills with 10,000 gallons of water per minute.

Double spiral staircases are not unheard of, but they are very rare.