The United States is best approached as a set of separate regions rather than a single destination. The Northeast concentrates walkable historic cities within a few hours of each other; the West runs on national parks and long drives; the South and Southwest have their own culinary and musical traditions; and cities like Las Vegas or Miami exist largely for visitors.
The guides on this page cover New York, San Francisco, Los Angeles, Chicago, Philadelphia, San Diego, Las Vegas and other cities, along with an overview of nationally known landmarks. Two things shape planning more than anything else: domestic distances usually mean flying rather than driving between regions, and entry to popular national parks and some major museums now runs on advance timed reservations during peak months.