There is no true substitute for visiting one of America's great national parks, but this website, designed "to present the natural, cultural, and historical resources of our national parks," is a nice surrogate for an in-person jaunt. On the homepage, visitors can select a park or theme from several dozen headings, including National Mall, Whiskeytown, Glaciers, and Devils Tower. Within each area, visitors can examine a series of high-quality images, along with four or five sections that address different aspects of each topic or specific park. Perhaps the most useful elements of the site are the very fine resources for teachers. Clicking on the Teachers' Lounge area will bring up a number of high-quality educational articles, lesson plans, and educational standards guidelines. All told, there are 14 different lesson plans here, which are complemented by links to external resources and additional readings. [KMG]