America's national parks are breathing spaces in a world in which such spaces are steadily disappearing, which is why more than 300 million people visit the parks each year. From the Grand Tetons in Wyoming to Acadia in Maine to Big Bend in Texas and more, Terry Tempest Williams creates a series of lyrical portraits that illuminate the grandeur of each park while delving into what it means to shape a landscape with its own evolutionary history into something of our own making. Blending memoir, natural history, and social critique, Williams's book is a meditation and a manifesto on why wild lands matter to the soul of America.