Most reviewed Mysterious Sites in Alton

  1. 4.0 Piasa Bird (5 reviews)
    - Historic and massive version of a "Thunderbird".
    Historic Sites • Ancient Ruins • Mysterious Sites
    Piasa Bird image
    A very quick stop but a lot of bang for your buck. While it is a replica and located on a different limestone cliff, it is still beside the river and you can imagine what people back then thought as they floated by the river and saw this massive painting which is still a wonder to behold. See more..