The "deem sum" was pretty expensive, not altogether authentic, and really kinda touristy--but still fun. Yang Sing's a pretty popular place, so this was drawn during our 20 minute wait for a table. On the left, you can see half of a cable car ceiling.
The restaurant is half housed in the back atrium of a giant commercial building called the Rincon Center; a beautiful, restored streamline moderne post office, adorned inside by 27 amazing murals by a fellow named Anton Refregier. It's awesome. I'll have to go back and do some sketching sometime.