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

The park that the Chicago Stockyards built.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

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

Astounding collection of coin-operated games and automata.

This freshwater spring fills with 10,000 gallons of water per minute.

The writing studio of an American adventure author, built in the style of a medieval castle.