If you're from an area where seasons are distinct and easily recognizable, visiting Southern California will make you feel as if you're not having seasonal changes at all. But if you look closely, you can find it.
Location: Terrenea Resort - L.A.'s Oceanfront Resort
http://www.terranea.com/
My gardening mentor, Florence Sullivan, told me she was convinced that even the plants are slightly confused and bloom when they shouldn't. In any case, if you're used to extreme weather changes, and predictable patterns in nature, Southern California Fall will certainly make you realize you have to open your mind and awareness, and look for the changes.