I thought I'd throw some more confusion your way. We've done 2 cross country road trips(from Pa.)and LOVED them both. Our kids favorite stops were Gateway Arch(they loved the ride to the top), Deadwood City and Badlands, Moab, Glenwood Springs, Co.(hot springs), and Pike Peak. Your kids will probably not be to familiar with Oklahoma City Federal building but the memorial was beyond words. We live 30 miles from flight 93 memorial and have visited the WTC memorial but the OKC memorial was so moving. To walk past the chairs.... We spent 12 days in California and wish we had longer. As a family we really enjoyed Ronald Reagan Presidential Library, Alcatraz, San Diego Zoo(we stayed at Homewood Suites Hotel Circle)and of course Highway 1. Redwood National Park was unbelievable and worth every second of the drive up. I know I'm on the Disney boards but
Disneyland was not our favorite.(Let the attacks begin)I guess we are to accustomed to Disneyworld and were a little disappointed. I guess we like how immersed we feel in WDW. Have a great trip!