The longest navigable underground river in the United States is home to countless blind and albino animals.

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

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

This former office building has been transformed into an immersive music venue and art space.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Constructed in 1882, this jail once housed local inmates and the sheriff's family all under one roof.

One tree's homage to soles past and present.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

The final resting place of the most famous sharpshooter.

This abandoned mine and power plant was built atop land once given to Revolutionary War soldiers.

An abandoned asylum incorporated into a college campus.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

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

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.