I took some time away from a conference to take this fascinating subterranean tour of Seattle's history, and it was thoroughly enjoyable! I got to learn more about the original Pioneer Square, some of the original roads and walkways, and other interesting points in Seattle history, such as the Klondike Gold Rush and Skid Row. There's a lot to learn, and our guide was very captivating and informative. If you have trouble managing stairs, then I would recommend not taking this tour.