Seattle's Hidden Underground City

vivaboo.com — The Seattle Space Needle, Safeco Field, Pike Place Market and the Washington Ferries are all places you probably have on your “must see” list when traveling to Seattle, Washington or the Pacific Northwest. But did you know that one of Seattle’s top tourist attractions is actually underground? That’s right, you have to go below the city to tour Seattle’s famous Underground City. Jan 13, 2011 View in Crawl 4