I love Platte River State Park; there are accommodations for every type of camper - cabins, RV, privative - hell they even have teepees!

On top of the excellent camping offered, they have a wealth of amazing hiking / biking trails that traverse through some amazing scenery. Just like the camping, you can pick between the less intensive paved walkways or you can walk along the hilly bluffs that contour the Platte River.