I've mentioned before how much we enjoyed Zion NP, I want to go back.
we visited Glacier but it was very cloudy and the road was not yet open.
I'm reading that the Ocmulgee Indian Mounds near Macon, GA may become an NP. That's a bit odd to me, but OK. The Etowah Indian Mounds are also notable. The "mound builders" are an interesting topic I think.
Chamonix in the French Alps is a place I'd like to revisit. Iceland looks pretty neat also.