This Zoo was rated one of the best zoos in the US! Make this a full-day activity, if you can, so that you can make sure you get to see all the animals up close and in their open-air habitats. The variety of animals is amazing, and they have complimentary bus tours around the whole zoo plus complimentary gondola rides where you can see the whole zoo and downtown San Diego from above!
The beach is boxed in by two rock jetties at both ends with the Oceanside Pier in the distance to the south and the marina is right behind the beach. If you go here look for the South jetty (on the left if you are facing the beach), that is where Nick proposed! Also, this beach has several parking possibilities. There are paid and free two-hour parking spots closer to the beach but if you want to make a day of it here is the address for the free parking lot that is just a short walk from the beach: 101-499 Riverside Dr, Oceanside, CA 92054.
This park has beautiful botanical gardens, architecture, and museums. The entry fee is free and there are a lot of exhibits which are free. Free parking can also be found around the outside gate of the park. Make sure to check out the massive bridge, that towers over the 163 highway, which you can walk over!