My husband, teenage son, and I all agree we haven't seen and would like to see Sequoia National Park. Have also never seen Yosemite. What else should we see July 13 - 19, 2016. Those dates can be flexed either direction, but preferably no more than a week total. We've seen Las Vegas, Grand Canyon, Hoover Dam. Prefer natural wonders. Have access to a RCI time share exchange, if any suggestions on location. Coming from Wisconsin and will need to rent a vehicle. I've seen Joshua Tree, Death Valley. I would ideally prefer areas new to all 3 of us. Would appreciate any suggestions. Thanks.