Some colorful graffiti pieces on the shell of an abandoned building in Detroit.

Pieces by ND’A and Hanksy from the recent street art exhibition Surplus Candy inside an abandoned East Village building.

A new mural by the French street artist LUDO on the exterior of the Rag & Bone boutique on Houston Street.

Maya Hayuk's new mural on Houston Street has not been spared by taggers.

Happened upon this terrific mural by REVOK and RIME in Detroit, “A Man’s Threat and a Woman’s Pet” (2012).

Wonderful and slightly creepy street art eyes on 19th Street in Gowanus.

Spotted this Star Wars-themed mural on an abandoned building amid rows and rows of empty lots in Detroit.

Pavel Acosta's amazing drywall paint collage mosaic thing “Wallscape” (2013) from El Museo del Barrio's terrific LaBienal 2013 (through January 4).