The building at the end is a radio station (KPH.) This radio station was responsible for ship-to-shore communications for the central west coast portion of the United States back in the early Twentieth century. This station has been credited as being one of the last to broadcast Morse code in the United States. The powerful transmitting antenna was located 20 miles away as so it won't interfere with the sensitive receiving antenna designed to listen to ships that were hundreds of miles away.