Bay seniors in the mood for a visual feast might try a couple of hours at the new Berkeley Art Museum. The exterior design is still in some dispute, two boxes squeezing a huge wad of play dough. But the inside, while not as theatrical as the old museum, is a labyrinth of airy, white spaces and the inaugural show is full of surprises from artists you mostly have never seen before, for example webs designed by an architect and spun by actual spiders. Two blocks from the downtown Berkeley BART station. $12 .