There's also a townhouse version in federal architecture. Many original Adam townhouses, both attached row houses and narrow detached urban houses, still exist. They're concentrated in cities like Boston, Philadelphia, Georgetown and Savannah. Townhouse developments are becoming increasingly popular as part of an effort to conserve space and facilitate pedestrian zones. Most such developments built today are modeled on federal style.Tell us: What do you think about the federal, or Adam, style? Are you ready to embrace it, or do you prefer to admire it from afar?