The Crofton pump house and chimney were built in 1807 and started working in 1809. I think the patches on the wall were where the beams for the 1812 Boulton and Watt pump were passed through the wall.
I thought I'd post a photo I took of the beams of the Crofton Beam Engines. These are the oldest working steam engines in the world!
Today's photo is of a Tower Bridge Steam Engine. One of two identical engines, it is housed under the south approach to the bridge.
Today's photo shows the view west from Tower Bridge from the west walkway, in counterpoint to yesterday's view to the east.
Today I provide two interpretations of the view to the east from Tower Bridge. The first is a color HDR, the second a black and white interpretation made in the new Topaz B&W Effects 2.1.
I'd arrived in Hong Kong on a foggy day and it was a foggy night in Hong Kong as I got ready to leave.