Windsor Hills Historic District is a national historic district in Baltimore, Maryland, United States. It is a cohesive residential suburb defined by rolling topography, winding, picturesque streets, stone garden walls, walks and private alley ways, early-20th century garden apartments, duplexes, and freestanding residences. Structures are predominantly of frame c…Windsor Hills Historic District is a national historic district in Baltimore, Maryland, United States. It is a cohesive residential suburb defined by rolling topography, winding, picturesque streets, stone garden walls, walks and private alley ways, early-20th century garden apartments, duplexes, and freestanding residences. Structures are predominantly of frame construction with locally quarried stone foundations. Windsor Hills developed over a period from about 1895 through 1929. The dominant styles include Shingle cottages, Dutch Colonial Revival houses, Foursquares, and Craftsman Bungalows.