Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

A factory in Milwaukee where poop is reclaimed… and recycled.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

A wonderfully curated used bookstore in an airport.

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

The nearly 200-year-old building displays a perplexing grammatical error.

A bedazzled house and crown "jewel" of outsider artist Loy Allen Bowlin.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

Every weekend, people gather here for a brief chance to see their loved ones on the other side of the United States–Mexico border.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

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

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

A 19th-century horse lover's bequest led to the construction of this unique fountain in Chicago.

A unique botanical garden housed in three giant geodesic domes.