San Bernadino and Riverside are close though that going between the two places for family fun and events is easy
Another part of the desert that isn't quite as high but offers many family friendly activities.
the high desert has it own gems and places to visit once the temperatures drop around death valley
Taking the whole family someplace always involves logistics and comfort especially when the family is neurodivergent. these are my winners for keeping panda, penguin and me sane on long fun days