Mount Soledad
La Jolla
The most complete view in the city: ocean to the west, downtown and the bay south, Mission Bay below, and the mountains east. It's a drivable summit with a small free lot, which makes it the easiest great view in San Diego.
Local tip: The lot is small and fills at sunset. Go 45 minutes early or come at sunrise, which is nearly empty and arguably better light on downtown.
