A Complete Guide to America's National Parks

Since 1872, when Yellowstone became America's inaugural national park, these protected areas have enthralled visitors from around the globe. Currently the 63 national parks attract more than 300 million visitors each year. But what is the X factor that draws people again and again to these historic places or wilderness spaces? In this comprehensive guide readers will begin to understand the character of these parks, for each is, in its own way, truly unique.