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

Collective made up of artists, musicians, and activists.

Detroit housing collective working to create an "environment for revolutionary change."

This feline raises a friendly paw at drivers barreling toward the freeway.

Concrete igloos standing across from what remains of the Michigan Central train depot.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

Standing guard on top of an old, vacant ice cream shop.

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

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.