The Bridge Mark and other City of London related topics
Thumbnails. No border: thumbnail links to a 640 pixel image. Pink border: thumbnail links to bigger image. Blue border: left hand half of thumbnail links to bigger image; right hand half links to image description on the Wikimedia Commons.
Tower Bridge
Wallyg's photo of a matching plaque put up an hundred years later - has good write-up about the bridge.
Miles from the river
At TQ 3432 7149 at the junction with Westwood Hill. For more details see this image at geograph.org.uk.