Turnip-shaped island just off the Michigan shore in Lake Huron.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

If astronomy had a ghost, it would look like this observatory.

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

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

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.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

Moving, mind-blowing metal sculpture work of an outsider artist.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

A speakeasy takes on Chicago's drinking culture.

A monument to the art of slicing people open.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

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

A bizarre house filled with an astounding array of collections.

Former hotel turned into haunted playground.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

One of the few surviving "Wigwam"-themed motels.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

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

One man's vision and a labor of love of many.

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

All that's left of the quintessential "cabin in the woods."