This mysterious hill seems to pull objects uphill.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

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

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

Symbolic attempt to overcome the issues of life.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

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

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

This abandoned nuclear cooling tower casts a shadow over a bucolic town.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

A reclusive Memphis neighborhood is home to decades worth of misunderstood Masonic folk art.

Live long and prosper in Tennessee.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Home of an evil witch famous within southern folklore.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

Once known as the Illinois Asylum for the Incurable Insane.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

In the Shawnee National Forest, amazing rock formations peer through the treeline.