One of the must see places in San Francisco, Coit Tower stands on Telegraph Hill, so it's a good place to see San Francisco. During the daytime, you can see the streets of San Francisco changing elevation over different hills. At night, you just see lights everywhere, showing you where the houses are. The strange part is that the parking lot is always crowded, even if you go at 2 in the morning. You may need to wait a bit for someone to leave or there might be some parking on the bottom of the hill and you can just walk up the hill.