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

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.

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

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

An eccentric park and pool.

Where old school Polish Chicago and young hipster Chicago live side by side.

An avant garde art museum at the University of Chicago.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

An antiquated German apothecary on Chicago's North Side.

A Bibliophile's Dream.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This shop for all your super spy needs hides an educational secret.

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

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.