We have 4 days to go from Lincoln to Ft Wayne in September. We have made this trip many times using I-80, but would like to take a different route. We did take a different route a few years ago and made stops at the Pony Express Museum and Lincoln's tomb. We enjoy historical sites and local eateries.. Although we are not very athletic we do enjoy walks up to 2 miles so short hikes in state parks, etc. are okay. This will be the first time in 5 years a trip has not centered around family/grandchildren so something a little romantic would be nice too. Any suggestions?