We are driving our daughter's car from Oregon to Western Massachusetts. We drove across the county 35 years ago and took a southern route. This time we want to travel along a northern route We have lots of plans from Oregon to South Dakota and have no idea where to go from there. We like to hike and see historical sites. We have a couple of weeks for the trip and would like to drive 4-8 hours a day. We are flexible about drive times so we can stop in interesting places. Camping a few nights along the way is a possibility. We have no idea about what cool things we should not miss. Any advice would be appreciated.