Claim: Plaza de César Chávez founded in 1797 is located in San Jose (largest city in Northern California), California and has an area of 2.3-acre (9,000 m²).
Evidence: The Plaza de César Chávez is an urban plaza and park in Downtown San Jose, California, in Silicon Valley. San Jose (/ˌsæn hoʊˈzeɪ, -ˈseɪ/; Spanish: [saŋ xoˈse; Spanish for 'Saint Joseph'), officially San José, is the cultural, financial, and political center of Silicon Valley, and the largest city in Northern California by both population and area. 2.3-acre (9,000 m²)