I decided to take the Big Bus tour of the downtown sights! $59 and worth every penny. The lower seating is enclosed and the upper seats are open air...no roof. A recording tells you the history, the buildings, China Town, the Ferry district, the Presidio, Haight Ashbury, and the bus crosses the Golden Gate Bridge. I had a t shirt, a long sleeved shirt and carried a light hoody. We froze crossing the Golden Gate Bridge. The top of the bus is open. There is horrid freezing cold wind plus…