Here is a map of the Places tagged Beacon. Each one shows a site believed to be a beacon from Chinese Imperial times.
Beacons were typically built on hilltops, in sight of several other beacons. If a warning needed to be sent, the fire at the beacon would be lit. When the nearby beacons saw the fire, they'd light their own fires. This would be repeated, and the warning message would quickly be transmitted across large distances.
Click on the map markers or the links below to visit the page with further notes & photos about the beacon.