Opulent downtown movie theater now houses cars as an indoor parking garage.

Detroit’s downtown castle is one of the oldest structures in the city.

This historic Jewish cemetery sits right in the heart of a Detroit car factory.

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

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Where the Model T was made and the assembly line was invented.

This elaborately-carved white marble fountain was built to stand outside the Detroit Opera House.

A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.

A watercolor recreation of a famous fresco unearthed at Pompeii.

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

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

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

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

The final resting place of a prominent Chippewa chief and several Native American children.