A small abandoned and abused cemetery that has become a magnet for ghost hunters.

These abandoned grain silos and tunnels are an urban exploration dream.

A monument to the art of slicing people open.

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

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Former meatpacking facility turned vertical farm and sustainable business complex.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

The world's largest anatomically accurate brain sculpture.

A hollow cement depiction of time's inexorable effect on the human body.

The first American home of the isolated, egalitarian religion has a trove of Shaker architecture and artifacts.

An abandoned asylum incorporated into a college campus.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

In this relatively flat state the highest point is an honored place.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."