Ty, this is the Bill Osbourne Model Airplane Field, in Alameda, California. It is an Alameda city park maintained by the city, dedicated exclusively to control line flying. We don't share with, or allow, any other kind of model flying. Two paved circles, one full size and one for half A and medium size models. If you want an aerial view go to Google Earth and look for the intersection of Doolittle Drive and Harbor Bay Parkway.