Redwood City is rich in history and local lore. As the oldest city on the San Francisco Peninsula, Redwood City has a long and varied history. Originally a port town during the Gold Rush, Redwood City became the County Seat of the newly formed San Mateo County in 1856. Downtown grew into a vital center for commerce, government, and manufacturing in the early 20th Century, before declining in the 1960s and 1970s. During the late 1900s and early 2000s Downtown Redwood City began revitalizing, and this revitalization continues today.