Old Town is a neighborhood in San Diego, California. It contains 230 acres (93 ha) and is bounded by Interstate 8 on the north, Interstate 5 on the west, Mission Hills on the east and south. It is the oldest settled area in San Diego and is the site of the first European settlement in present-day California. It contains Old Town San Diego State Historic Park and Presidio Park, both of which are listed on the National Register of Historic Places.