"The largest freshwater system on Earth, like you've never seen it before. The Great Lakes region is home to one-tenth of the United States' population, and one-quarter of Canada's. Even if we remember the mnemonic HOMES, we might forget what a natural wonder they are. Cartographer Alex B. Hill, author of Detroit in 50 Maps, shifts our perspectives and offers a fresh look at the five lakes and the vibrant region surrounding them. Split into four categories--history & culture, ecology, infrastructure, and physical--these fifty-plus maps show the lakes' influence and confluences, from the Underground Railroad to monarch butterfly migration. See how many NFL teams play on a Great Lake, where mysterious shipwrecks and Bigfoot sightings cluster, the lakes' effect on snowfall, and even how "not so Great" lakes have vied for (and in one case, temporarily won) a coveted Great designation. Shrinking wetlands, oil spills, and rising temperatures due to climate change reflect both the fragility of the lakes and the vital role they play."