Huge stone depressions which may have acted as an Incan agricultural experiment.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

This stone complex marks the urban center of a lost civilization.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

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

Detroit housing collective working to create an "environment for revolutionary change."

The world's oldest operating jazz club has been in operation since May 1934.

Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

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

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

Concrete igloos standing across from what remains of the Michigan Central train depot.

The city is full of whimsical portals to another world.

Legs Inn provides Polish food, a cornucopia of Native American artwork, wood carvings, and mounted deer heads.

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

"The Most Boring Road in the State."

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

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

World's largest Christmas store.