World class zoo with a fantastic polar bear exhibit, wild animal park, Balboa Park, Oceanside boardwalk, SeaWorld, A wavepool/waterpark, Carlsbad village, Glen Ivy hot springs in Corona (if you can get a sitter), Old Town San Diego, Take the Coaster train from Oceanside down into Old Town, it's fun and the kids can wiggle all they want, Solana Beach is fantastic for tide pools, Cabrillo National Monument has another fantastic seashore with outstanding tide pools, the Escondido mall has an ice rink inside. Ask around when you get there, I'm only touching the tip of the iceberg. I don't know if it's still there, but there was an African art dealer who carried enormous stone carvings that are absolutely phenomenal and kids are allowed to touch anything (four adults couldn't budge one of those things).