It'd be cool to see Tinian.
We made our first visit to Wendover, UT and saw their really great WW2 museum - mostly focused on the heavy bombers and crew that passed through there for training but notable as the site where the exterior ballistics were learned and practiced for two of the more infamous bombs carried by B29s. It was interesting to see that less glamorous (no Hollywood movie, yet) part of the last bits of the war. Besides the Enola Gay hanger there are the loading pits and other gems
Hey, it's out in the UT/NV desert - you never know what you might find still surviving. Maybe even the cargo plane from Con Air.