Spend the day exploring the San Diego Zoo Safari Park, a wildlife sanctuary and botanical garden spread over 1,800 acres. Take a tram ride, observe animals like elephants, cheetahs, and gorillas, and experience a thrilling flightline safari.
Step aboard the USS Midway, a retired aircraft carrier that has been turned into a museum. Explore the flight deck, hangar deck, and engine room, and see real fighter planes and helicopters. Don't miss the flight simulators and "Ejection Seat Theater" experience.
Enjoy a day of Lego-themed activities and rides at Legoland California. Highlights include Miniland USA, featuring miniature versions of famous landmarks made out of Lego bricks, the Coastersaurus roller coaster, and the Sea Life Aquarium.
Spend the day at Belmont Park, an amusement park located on Mission Beach. Enjoy classic rides like the Giant Dipper roller coaster and the Beach Blaster, plus newer attractions like laser tag and a zipline. Don't miss the adjacent beach and boardwalk for some fun in the sun.
If you have more time, consider visiting other popular San Diego attractions like Balboa Park, the San Diego Zoo, or the beaches. If you have less time, skip Legoland and opt for a relaxing day at La Jolla Cove or Coronado Beach. Don't forget to bring comfortable walking shoes, sunscreen, and water for each day.