I would approach it this way.
Each of the 50 states in the USA have a Travel and Tourism Dept. You can probably find them online. Then
Write a letter in Note Pad requesting that they send you an Information Kit. Then copy paste the letter
into an email to each. A lot of this may by now be online in websites, blogs, and Facebook pages. But it's all going to start with that ol Data Crunch.
In the meanwhile, if you are near a City of any size or can visit the main Library in your Capital City then you
may find books (Fodor's Travel Books as an example) and any other number of serial journals such as
"Action Vacations" (or such titles) which detail interesting vacation ideas you can pursue in different cities in the many states. Example: Going for a Sail Plane ride near a resort so that you can see the area from the air.
As you gather this "raw" information you can then begin to decide what would appeal to you and make a
bucket list for each State to work from. You may want the prioritize the list to those things best done in
any of the four seasons. Some things are best done at certain times of the year if they are outdoor interest.
Try to remember the functionality of your list of things to do should be at the center of your organizing so that if something isn't open or closed for repairs then your list is flexible enough that you can easily move on to the next items. Then you may be able to come back to that missed item later when it has reopened.
Thus with each main item try to vector a few alternates around it if you can find them. (these may be Museums, Parks, Observatories, Arboreum's & Botanical Gardens, Golf Course, Fishing spots, Marina's, Baseball Parks, Historical sites, Outdoor Theaters, County Fairs, Art Galleries, Scenic Parkways, Auto or Horse Race tracks, Boat Cruises, Spiritual/Religious Centers, or whatever interest you.
You are only limited by your imagination. You've probably heard that commercial slogan: "Wow! I could have had a V8" (V8 Tomato/Vegetable Juice fame) It suggest, "I could have done better than this".
I'll offer this website as a starting point. The "One" thing to do in each State.
http://www.huffingtonpost.com/2014/07/04/to-do-in-america_n_4775300.html