Compare what kind of house you can get for $500,000 in six markets across the country. First, in Washington D.C., two architects inspired by ships take a tiny row house and convert it into a home worthy of seafaring status. Next, in the city of brotherly love, a couple demonstrates how they live "green" in the heart of Philadelphia. Then, a mod hipster condo in San Diego, Calif., is the very definition of swanky living. We wrap with a quick tour of homes in Livingston, Mont., Sioux Falls, S.D., and Charlottesville, Va.