I visited North Dakota for the first time since I was a child, last Summer and enjoyed a number of places tremendously. I tend to enjoy driving through states and enjoying the scenic, historical and Americana aspects of those states. North Dakota had a lot to offer and I'm sure I only scratched the surface.
Minot - Great town with the enjoyable Scandinavian Heritage Park.
Rugby - Geographic center of North America...is it or isn't it? Who cares...it's a fun idea and the stone cairn is good for a picture.
Mandan - Fort Abraham Lincoln (Custer house) and On-A-Slant Village...both worth the time to enjoy.
New Salem - You've gotta see Salem Sue the giant cow!
Regent (and nearby) - The Enchanted Highway is magnificent...well worth a visit. Don't forget to stop at the gift shop in Regent and turn on the moving sculpture.
Dickinson - Dakota Dinosaur Museum...another very worthwhile place to stop. Lots of incredible displays. Make sure that you engage the staff in conversation, because some of them were involved in finding things that are on display.
Theodore Roosevelt National Park - Beautiful...make sure you take the time to really enjoy it.
Bismarck - Space Aliens Grill and Bar - Okay...so the food is kind of so-so...it's not that expensive and the kitsch factor makes the visit enjoyable.
Garrison - Quaint little town with the Wally Walleye statue at the end of the main street. Make sure you stop and get a malt at Ye Olde Malt Shoppe! It's only about a block away.
Another thing that will stick with me a long time are the sunflower fields...lots and lots of color.
If you like taking road trips, North Dakota is a great state to visit. I hope to get back there someday!