20 days in United States Itinerary

More than the country of car-packed streets seen in TV shows and movies, the United States of America is a complex and diverse home to over 300 million people living in a wide range of landscapes and climates. From its big-city skyscrapers to its sprawling natural parks, the country's ''melting pot'' combines many ethnic groups that share a strong sense of national identity despite their cultural differences. A country of road trips and big blue skies, the United States harbors orderly cities filled with restaurants, parks, museums, and innumerable sightseeing opportunities, as well as pristine natural areas perfect for a holiday in the great outdoors. To see as much as you can of this diverse land quickly, drive over some of the more than 6 million km (4 million mi) of highways leading through deserts, mountain peaks, fertile fields, and giant urban centers.

Known as the "Grand Canyon State," Arizona boasts dense forests, deep gorges, sprawling national parks, and modern ski resorts. Native American reservations take up about a quarter of the state, housing several tribes and offering visitors a chance to discover the varied cultures of the country's indigenous population. A patchwork of diverse tourist attractions, Arizona features exclusive golf courses and upscale shops, as well as cactus-covered canyons and stretches of desolate desert straight out of old Westerns, perfect for a vacation far from the city bustle. Though the state still clings to its Old West flavor, its busy college towns packed with young students from around the world exude a cosmopolitan atmosphere.

Still largely undiscovered by foreign tourism, Wyoming is anything but "the bunchgrass edge of the world," as a writer once called it. Though the state's geography includes mostly wide-open plains, swaths of high desert, and sweeping mountain ridges, it also contains many small towns filled with places to visit, such as historical buildings, museums, shops, and restaurants. A great place to discover the last vestiges of the Old West, Wyoming's tourist attractions include the country's first national park, Native American reservations, and a smattering of ghost towns from the early frontier days. As you travel across this "Cowboy State," remember that distances between towns can be vast, requiring more advance vacation planning than travel in more densely populated parts of the country.

Home to diverse natural ecosystems, Colorado boasts numerous ski resorts, vineyards, canyons, fossil-rich national parks, rugged natural trails, and picturesque scenic drives. Arguably the greatest of Colorado's many natural wonders is Mt. Elbert, the highest peak in the North American Rockies. The state's natural beauty inspired the opening lyrics of the song "America the Beautiful." Aside from its abundant unspoiled wilderness, Colorado also offers many urban attractions, including award-winning restaurants and nationally praised microbreweries. With an extensive system of highways and railroads, the state provides visitors on vacation with a chance to explore this largely untamed part of the country by car or train.