Two DC's finish major exams next year and we will have sometime in June/early July to go on holiday. One of them has said he wants to go to Texas and drive round in a RV. We did California in a RV last year so that doesn't phase us but what I am not sure of is what there is to do in Texas that would entertain older teenagers and what would be recommended to see including beaches etc. We don't mind driving and covering the distances and could take up to 3 weeks
Any suggestions would be gratefully received