I'm new to this site, I have pretty much flown everywhere I have been in the US, with the occasional drive out to Vegas. My wife's sister moved out to Dallas Ft. Worth and we plan on visiting her this June. Instead of wasting the money on plane tickets, we figured "why not make it a roadtrip?"! I have gotten as far as the Grand Canyon on our planned route but became stumped on other landmarks and sightseeing locations to visit on the rest of the trip. We are planning a 16 day vacation but would like to spend a majority of it with family out in Texas. I planned to allocate 6 days on the road sightseeing with 10 days out in Texas. Any suggestions on stops alone the way, must sees and alternate routes would be greatly appreciated.