The Wife and I are planning a road trip from San Francisco (Where we live) to Minneapolis, MN (Inlaws place) this summer. We are in our late 20's and early 30's. We have a 3 year old, who'll be 4 by the time we head out. We will travel in a Mini van. We plan on staying in motels and taking food with us to keep our costs down.
So far I've picked Yellow Stone park (old Faithfull), mount Rushmore, Crazy horse monument as definitive places to see.
Please suggest places along the way. We'll probably take 80E, then head up 15 to Yellowstone, 90 to Mount Rushmore and 35 into Minnesota. We'd like to see some stuff on the way there and some on the way back. We've visited most of the places inside California and are looking to see places out of state. Wife knows Minnesota well so she has that covered, but please feel free to suggest places to see there too.
I like natural wonders like Yellow stone. The wife likes hiking (easy hikes, we have a little boy) and she would like hunting for precious stones in fields and mines, though she has never done it before. I promised to let her have a day, she loves the Cash and Treasures on the discovery show.
My son likes dinosaurs, zoos and things boys his age like.
So , please be free to give your suggestions.