For some of the best views in San Diego, check out Mount Soledad in La Jolla. It's quite the drive up the mountain's windy residential roads but once you reach the top the views are spectacular. This is a great spot to watch the sun set into the Pacific Ocean or just admire the scenery. There's also a Korean War Veterans Memorial, which I've never visited, but may be worth checking out if you love history. Of course, this is a free outing with free parking so you can't get much more budget friendly than that!