My brother and I are planning to do a three week road trip from Sacramento CA over to Raleigh NC. We've planned major stops in Denver, Kansas City, St. Louis, Nashville, Raleigh, Atlanta, New Orleans, Houston, Dallas, Oklahoma City, El Paso, Phoenix, Riverside before heading home.

I'm looking for some interesting places to visit along the way. I think my favorite stop last year was seeing Carhenge in Nebraska. Or any recommendations you guys have for a long road trip. We took a two week trip last year that took us through the Northwestern part of the U.S., but this is a longer a trip, a lot further and we don't have as many family or friends to visit on the way.

Also wondering about weather for some of the areas, we don't get really cold weather, much less snow here, so I have no clue when it starts to get cold other places.