Read our web story: How Piedmont Became a City Inside a City
Reported by Chris Hambrick.
Bay Curious is made by Olivia Allen-Price, Jessica Placzek, Katie McMurran, Rob Speight, Suzie Racho, Paul Lancour and Ryan Levi. Additional support from Julie Caine, Ethan Lindsey, Vinnee Tong and David Weir. Theme music by Pat Mesiti-Miller.
Ask us a question or sign up for our newsletter at BayCurious.org.
Follow Olivia Allen-Price on Twitter @oallenprice.