The southwestern portion of the United States is home to many of these protected areas, and through our national parks system people are free to explore their scenic beauty at their leisure. In most instances, the biggest problem that a visitor will face is actually getting to the parks themselves, as they are generally quite remote from the nearest city. Planning your trip to visit many of these spaces can be challenging for this reason, and very well might be best to be left in the capable hands of professional touring companies who specialize in national parks tours. By planning your trip to have an origination point that involves the pickup and transport by a professional tour company, you will save yourself the effort of driving to and from the parks, as well as the stress of trying to figure out what elements are the best to explore. Companies that bill themselves as "adventure tours" actually specialize in a form of national park tour that is very close to self-exploration, allowing you to explore the parks in the way you desire.
Most tour companies that offer tours of the southwestern national parks will put together packages that include several areas and overnight camping. This is due to the remote nature of parks like Zion, Bryce, Monument Valley and the Grand Canyon from the nearest city that has airport service. In general, the closest major cities to these areas is Las Vegas or Salt Lake City, and each of them is about a four hour trek to the closest park. Once you are in the vicinity of the first park, however, you will find that the distance to the second or third is far less than the initial drive. This is why so many of the touring companies that are based in Las Vegas offer exploration tours of these areas as part of a multiple day tour, actually visiting each of them and potentially Antelope Canyon as well. By packaging the parks into a single drive that spans multiple days, a tourist can experience more of the diversity that the parks offer while minimizing the driving time in between. This way, you do not have to visit Bryce on one trip to Las Vegas and Zion on another, instead being able to experience them all in one single trip. This proves to satisfy most people who have never experienced the wonders of the southwestern parks, allowing them to see the differences and beauty of them all at once.