Old Town San Diego State Historic Park, located in the Old Town neighborhood of San Diego, California, is a state protected historical park in San Diego. It commemorates the early days of the town of San Diego and includes many historic buildings from the period 1820 to 1870. The park was established in 1968.In 2005 and 2006, California State Parks listed Old Town San Diego as the most visited state park in California (...)(from Wikipedia)