A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

A full-scale replica of a 1774 colonial settlement in Kentucky.

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

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

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

This calm grassy field was once a Superfund site full of thousands of nasty chemicals.

Bizarre and inspired combination store selling only two items: tires and bibles.

This abandoned cemetery has a dark past of bodies buried over bodies.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

This moving cemetery sphere is a slowly rolling stone.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

This mysterious hill seems to pull objects uphill.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

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

The largest historic preservation organization in the United States.

An unassuming 13-acre park is home to over 12,000 roses.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

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

A single handprint, which, according to Ohio State University legend, cannot be scrubbed off.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

A chapel built by Italian POWs during World War II tells a forgotten tale of the war on the home front.