Paranormal activity on the great lakes.

What was once the largest NFL stadium.

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

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

Where most of the world's flypaper was made.

These sprawling mines once served as a source of plaster and today serve as a storage facility.

Though its branches are painted bright colors by generations of locals, the tree is said to be a haunted portal to hell.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

The remains of a Rockefeller's lush Italianate estate hidden in the underbrush on the coast of Lake Michigan.

Center filled with hands-on displays served as a tribute to several astronauts with connections to the state.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

One extremely determined man's homemade universe.

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

The remains of a religious colony, its amusement park, zoo, and baseball empire.

Large pioneer village showcasing life during boom times.

A factory in Milwaukee where poop is reclaimed… and recycled.

A place to eat for on-the-run agents and espionage enthusiasts.

A 100-year-old chair with joints "cemented by nature."

This experiment in the lifespan of seeds will take a century before it is complete.

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

Outside Hope College in Holland, Michigan, a marker honors a University without people from the fictional Kcymaerxthaereal times.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.