Before we could make recommendations we would need a little more information.
I was rather sparse with the info.
Wife, daughter (18), most likely a friend of the daughter, and me traveling. Amusement parks are on the bottom of the list, hiking and sightseeing on top of the list.
We don't select a city for the destination, but the natural setting (e.g. Adirondacks, Sedona, Hawaii), although we do enjoy visiting historic sites, museums, or theater in the area.
Being on the water would be a plus.
Thanls to all for the suggestions so far!