Santacon is the only event I know where one can see a large gathering of happy Santas in one location. There had to be close to 500 Santas and holiday-related costumers converging onto the steps of San Francisco's City Hall.
It didn't take long before the rowdy crowd took over the street and blocked all traffic from passing through.
The goal of Santacon San Francisco is for the Santas to congregate and then bar-hop through the city. Not a very family-oriented event. Once many of them have left for their drinking adventure, I was able to get onto the City Hall steps and take a picture of the remaining crowd.