Just outside Washington, DC, in Northern Virginia, lies an early planned development called Hollin Hills, now a historic district. There are around 450 homes built from about 1950 - 1970, and they share a common architectural DNA courtesy of architect Charles M Goodwin. The district is further characterized by thoughtful use of the existing hilly terrain, careful siting, and incorporation of numerous small parks. It all seems well thought out and executed, and remains true to its original identity, given its protected status.
Some obvious design elements that stand out in Hollin Hills are the expansive use of glass, lack of garages, integration with the terrain, and a certain overall modesty. I would say these homes have an identity, and I find them appealing relative to the more common colonials and oversized McMansions in the area - we're just a couple miles from Mount Vernon. Here are a few examples of Hollin Hills homes.