This woodland architectural installation acts as a camera obscura for the heavens.

These eerie outliers of the lightning bug family glow a mysterious blue color.

An opulent testament to the boom-and-bust history of industry in north central Indiana.

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

A medical facility that has been kept frozen in time.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

First planned industrial community in the United States.

Former hotel turned into haunted playground.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

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

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A hollow cement depiction of time's inexorable effect on the human body.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A speakeasy takes on Chicago's drinking culture.

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

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

An eerie site of reverence for those who have completed an epic journey.