One of America's youngest big cities, Seattle has already seen a lot of growth and change in 160 years. Stunning buildings came up (and sometimes down). Parks were built on shipping docks, oil terminals, and airspace above a freeway. And despite Seattle's nature-loving reputation, its landscape was raised, lowered, and reshaped. Explore dozens of altered places throughout the Jet City with Clark Humphrey, author of Arcadia's popular Vanishing Seattle and Seattle's Belltown.