39 mi from Woodbridge, Mount Diablo leads the list

Oakland Arena: Mike Disharoon, CC BY-SA 2.0 · California Memorial Stadium: Quintin Soloviev, CC BY 4.0 · Lake Berryessa: Unknown, Public domain · Six Flags Discovery Kingdom: Tinned Elk, CC BY-SA 3.0 · Mount Diablo: Trurl66, Public domain · Children's Fairyland: Wordworking, CC BY-SA 4.0 · ARCO Arena: CLopez63, CC BY-SA 3.0 · Sutter's Fort: Ian Howard, CC BY 2.5 · Lake Merritt: Dcoetzee, Public domain · People's Park: Minesweeper, CC BY-SA 3.0 · Hornet Stadium: Quintin Soloviev, CC BY 4.0 · Governor's Mansion State Historic Park: Mark James Miller, CC BY 3.0 · California State Railroad Museum: The original uploader was Swampyank at English Wikipedia., CC BY-SA 3.0 · Mission San José: King of Hearts, CC BY-SA 3.0 · Hearst Greek Theatre: Sanfranman59, CC BY-SA 3.0 · Calaveras Big Trees State Park: John J. O'Brien (talk · contribs), Public domain · Leland Stanford Mansion State Historic Park: M.Mierzwa. MCalamari at en.wikipedia, Public domain · Adventist Health Arena: Christopher Bauer, CC BY-SA 4.0 · Crocker Art Museum: Amadscientist Mark James Miller, CC BY 3.0 · Oakland Zoo: Todd Dailey, CC BY-SA 2.0 · Paramount Theatre: sierra jane from oakland, ca, CC BY 2.0 · Western Railway Museum: LPS.1, CC BY-SA 3.0 · Ardenwood Historic Farm: Mactographer at English Wikipedia, CC BY 2.5 · Chabot Space and Science Center: The original uploader was Daniel Olsen at English Wikipedia., CC BY 2.5 · Tilden Regional Park: Ijon, CC BY-SA 4.0 · Emeryville Shellmound: unknown, property of Oakland (California) Public Library, Public domain · Old Sacramento State Historic Park: Frank Schulenburg, CC BY-SA 4.0 · Berkeley Art Museum and Pacific Film Archive: Cullen328, CC BY-SA 3.0 · John Muir National Historic Site: NPS, Public domain · Oakland Museum of California: Cullen328, CC BY-SA 4.0 · Blackhawk Museum: ShakataGaNai, CC BY-SA 3.0 · Railtown 1897 State Historic Park: Ed Bierman, CC BY 2.0 · Haggin Museum: Bluelight999, CC BY-SA 4.0 · Sacramento Zoo: L Wade Brown (Grubbycup), CC BY-SA 3.0 · USS LCS(L)(3)-102: United States Navy, Lt. Erik Reynolds, Public domain · Aerospace Museum of California: J.smith, CC BY-SA 3.0 · Alum Rock Park: Unknown, CC BY-SA 3.0 · Lawrence Hall of Science: Namedina. Cropped by Oleg Alexandrov, CC BY 2.5 · The California Museum: Ldabrahams at English Wikipedia, Public domain · Crest Theatre: Visitor7, CC BY-SA 3.0 · Sleep Train Pavilion: dantc from San Francisco, United States, CC BY-SA 2.0 · California State Capitol Museum: [2], CC BY-SA 3.0 · USS Lucid: U.S. Navy photo, Public domain · Port Chicago Naval Magazine National Memorial: en:National Park Service image., Public domain · William Land Park: Mymetlifebee$1, CC BY-SA 3.0 · Berkeley Community Theater: Daniella Thompson, CC BY-SA 1.0 · Blake Garden: John Lambert Pearson, CC BY 2.0 · Golden Gate Railroad Museum: Grey3k, CC0 · Rosie the Riveter/World War II Home Front National Historical Park: E. F. Joseph, Public domain · University of California Botanical Garden: Burkhard Mücke, CC BY-SA 4.0 · University of California Museum of Paleontology: UC Bill, Public domain · Napa Valley Opera House: Sanfranman59, CC BY-SA 3.0 · Oakland Aviation Museum: Bill Larkins, CC BY-SA 2.0 · Pacific Pinball Museum: Michael Moore for the Pacific Pinball Museum, CC BY-SA 3.0 · Zellerbach Hall: Photo: Andreas Praefcke, CC BY 3.0 · Adventure Playground: Rhododendrites, CC BY-SA 4.0 · Benicia Capitol State Historic Park: Epolk, Public domain · California Automobile Museum: Cullen328, CC BY-SA 3.0 · McHenry Mansion: Rayana fazli at en.wikipedia, Public domain · McKinley Park: Ingawh, CC BY-SA 4.0 · Micke Grove Zoo: Breck22, CC BY-SA 3.0 · Sacramento History Museum: Janannwa, CC BY-SA 3.0 · University of California, Davis, Arboretum and Public Garden: Shamanic Shift Center from Living and out reaching more in rainbow spacetime & c, CC BY 2.0 · Alameda Theatre: Binksternet, Public domain · Berkeley Rose Garden: Jef Poskanzer from Berkeley, CA, USA, CC BY 2.0 · Cesar E. Chavez Plaza: Lowe, Jet Related names: O'Connell, Kristen, transmitter California State Railr, Public domain · Gallo Center for the Arts: OsotedeMonte, CC BY 3.0 · Museum of Art and Digital Entertainment: Blz 2049, CC BY-SA 4.0 · Ruth Bancroft Garden: Burkhard Mücke, CC BY-SA 4.0 · Travis Air Force Base Aviation Museum: Nick DeCicco, Public domain · African American Museum and Library at Oakland: Oakland Public Library, CC BY-SA 3.0 · Bohart Museum of Entomology: Jakobjess, CC BY-SA 4.0 · California State Indian Museum: Epp, CC BY-SA 3.0 · Don Francisco Galindo House: Sanfranman59, CC BY-SA 3.0 · Morcom Rose Garden: Calibas, Public domain · Museum of Vertebrate Zoology: UC Bill, Public domain · Pardee Home: Jack Boucher, Public domain · Wells Fargo Pavilion: Amadscientist, Public domain · Gardens at Heather Farm: Utilizer, CC BY-SA 3.0 · Huckleberry Botanic Regional Preserve: Gordon Leppig & Andrea J. Pickart, Public domain · John Hinkel Park: ~jar{}, CC BY 2.0 · Niles Depot Museum: Pi.1415926535, CC BY-SA 4.0 · Woodland Opera House: Flickr user basykes, CC BY 2.0 · Bernhard Museum Complex: YankeeSpirit, CC BY-SA 3.0 · Eddy Arboretum: United States Forest Service, Public domain · Jensen Botanical Gardens: Kowloonese at en.wikipedia, CC BY-SA 3.0 · Regional Parks Botanic Garden: Stan Shebs, CC BY-SA 3.0 · Rusch Botanical Gardens: Miwasatoshi, CC BY-SA 4.0 · Sierra Nevada Logging Museum: Junkyardsparkle, CC0 · University Arboretum at California State University, Sacramento: DevinCook at English Wikipedia, Public domain · Labadie Arboretum: National Park Service, Joshua Tree National Park., Public domain · Markham Regional Arboretum: Miguel Vieira, CC BY 2.0