Old Town San Diego
One of the most visited state parks in California, Old Town San Diego State Historic Park commemorates the early days of the town of San Diego and includes many historic buildings from the Mexican-American period from 1820 to 1870. The park was established in 1968 and has been designated as a U.S. Historic District. It is also listed on the National Register of Historic Places and is a California Historical Landmark and San Diego Historic Landmark.