Several blocks centering on 4th Street north of University Avenue have evolved from light industrial uses into a upscale shopping and dining district. The compact area is busiest on bright weekend afternoons. Stained Glass Garden, Builders Booksource, and the Apple Store are among shoppers' favorites, along with a minislew of boutiques and wonderful paper stores. A walk through the East Bay Vivarium, at 1827 5th St., where turtles swim, Amazonian snakes slither, and baby
mice (dinner) cower, is better than a walk through the reptile house at the zoo—and it's free.