A display of magnificent stained glass windows is the first exhibit of its kind.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

Years of archaeology, just chillin' by the water cooler.

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

A science teacher's dream.

An antiquated German apothecary on Chicago's North Side.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This shop for all your super spy needs hides an educational secret.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Pennsylvanian mass grave and possibly mass murder.

The Home and murder site of the witch of Rehmeyers Hollow.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This Old Testament garden features 100 plants from biblical times.