Remnants of a quarry company town still stand on the banks of the Wapsipinicon River.

Low-frequency noise compared to an idling train can only be heard by some of this industrial town's residents.

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

There is an art, a science, and certainly a responsibility to occupying The Big Red Chair, and this is where it's learned.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

This abandoned 19th century orphanage started as a boarding school for children of Civil War veterans.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

The secret skeleton of a murdered nun was discovered in this church basement, but the scandal doesn't end there.

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

This family driveway also serves as the highest point in Illinois.

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

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

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

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

A concrete block embedded with thousands of pulled teeth was created by a local dentist to memorialize his dog.

This cave holds a surprisingly colorful variety of geological oddities.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

The arboretum whose marshy soil sucked up the dreams of housing developers.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

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