Lonely Planet (www.lonelyplanet.com/usa) Destination information, hotel bookings, traveler forum and more.
National Park Service (www.nps.gov) Gateway to America's greatest natural treasures, its national parks.
Eater (www.eater.com) Foodie insight into two dozen American cities.
Punch (www.punchdrink.com) Quirky guides and helpful insights on how to drink well in America's cities.
New York Times Travel (www.nytimes.com/travel) Travel news, practical advice and engaging features.
Roadside America (www.roadsideamerica.com) For all things weird and wacky.