Selfie on the Bridge

As soon as I stopped to take a photo of the bridge over the River Medway in Tonbridge this guy got out his phone to take a photo. At first I thought he was capturing me or something behind me but now I suspect he was capturing himself in front of the castle behind him. (Thanks Robin below for this suggestion)

There has been a bridge over the Medway at the foot of Tonbridge castle since Norman times. This bridge was first built in 1887 but has been widened twice, 1913 and 1928.