I have a friend that just moved to San Diego last month. I am planning on visiting him sometime this year for a few days. He's not really going to be able to show me around, since he's pretty new there too and had just been working non stop since he got there. What are cool places to visit in and around the area? I am going to rent a car so getting around shouldn't be an issue. Interested in any cool matte or historical sites, or anything unique to the city. Not interested in visiting 5 star restaurants, but if there is a can't miss local good joint id like to know about that as well. Also, when is the best time of year to go? From both a weather and cost standpoint?