1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar


  1. Signal Tower

    Snapshot Title: Signal Tower
    Taken by: T. E. Smith-Lamothe

    Image: Great Wall of China at Jinshanling number 2
    Image Owner: T. E. Smith-Lamothe


    At intervals, separate round towers were placed with ready-to0light bonfires to signal alarms if an enemy approached the Great Wall.