The California Tower at the Museum of Us is open Wednesday to Sunday. The Koester Memorial Sundial stands prominently in San Diego State University's Campanile Mall, directly in front of the iconic Hepner Hall.The Don Diego Clock Tower an iconic feature at the Del Mar Fairgrounds has been relocated. Experience the MTS Clock Tower, a historic landmark in Downtown San Diego that showcases the city's architectural beauty and vibrant atmosphere. I got a job in this mall in 1988 and I can STILL HEAR THIS CLOCK. My store was just down the way and this clock was so loud! Jessop's Clock is a large outdoor pendulum clock in San Diego, California, United States.