The wall is an example of architecture, really ...
Today's ONS challenge was to photograph some kind of architectural example. It said, "all about capturing images of different styles of architecture in different lights." Does a climbing wall count? My dictionary's definition (albeit the second one) is, "the complex or carefully designed structure of something." Hmmm . . . sounds like a wall would count. So here's my ONS3 attempt, as well as my weekly challenge for leading lines attempt!