The first is the Norman garden in Berkeley. I'd say the most interesting features in this garden were not the native plants but the recycled materials and water catchment system incorporated into the architecture.
I love the materials used to create the treehouse, as well as the window arbor and rain chain.
The materials used in the chicken coop were pretty great too.
Lots of great-looking reused items and water storage elements defined this garden.
The last garden I visited, the Campbell Garden, was a nice mix of California natives with a dash of Asian spice, for a quintessential Bay Area garden.