Welcome: Union Square Online | Sowebo | Historic Baltimore Neighborhood Named for the graceful park at its center, Union Square is a diverse urban setting - home to art galleries, artist studios, H. L. Mencken life-long residence, and spacious three-story pre-Civil War Italianate and Victorian row houses. On the historic ground of Southwest Baltimore known to locals as SoWeBo, Camden Yards, the Inner Harbor, B&O Railroad Museum, Ravens Stadium, and University of Maryland-Baltimore are all within walking distance. The Union Square / Hollins Market District is listed on the National Register of Historic Places. Union-square.us~Site InfoWhoisTrace RouteRBL Check