The Wild Animal Park extension to the zoo in Escondido was even nicer (as I remember).As somewhat lame as it sounds, the SD Zoo is really a must see. Between that and/or the safari tour you could spend an entire day there.
Miramar Air Base is also legit. Went to the airshow they had back in the Fall and it was awesome. If the Padres are in town, check out Petco Park. Great place to take in a ball game.
Couple of places for pictures... the National Cemetery up near Cabrillo Monument for view of the city and bay. Also Shelter Island just before sunrise for beautiful pictures of the city. Was stationed at the base about 50 yds away, and we would often head out on the pier at the end of our night shift to check it out. Lastly, any sunsets.Thanks everyone! Been there once for work. The zoo is amazing. Will definitely bring the kids. The Midway was interesting but probably not my kids cup of tea. Will check out Balboa park. Liked La Jolla Beach cove. Staying in Carlsbad so the food and beer suggestions are great.
Not a golfer though.
Son (about to turn 16) is into seeing that are new for him. Geography, landmarks, anything really.
Look for the Pizza Port nearest you. There is one right in Carlsbad. Casual pizza places with tremendous beers made on-premises, as well as impressive "guest" beers.
Lots of ridiculously great beer all around out there.