Sunday beach walk day. This sign greeted us at Crissy Field -- it says, in short, stay the hell away from the water because it is likely contaminated by raw sewage.
I chose this picture for the theme because it combines 2 of the big items people think about when they think of San Francisco -- fog and the Golden Gate Bridge.
The City Daily Photoblogs sponsors a monthly theme day. The following blog also registered that they would be posting to this theme on this day: