Just to add to the suggestions by DesertHawk, The Oregon Trail ruts at Guernsey WY are cut into limestone and actually look like wagon wheel tracks. There are ruts at Scotts Bluff, but they looked more like something created by flowing water.
Trail ruts at Guernsey

Follow the ruts down hill to see more ruts, including these.

A couple of miles away is Register Cliff, with names of immigrants still visible

Fort Laramie is not far east on route 26 and has a number of restored buildings


Chimney Rock from the new visitor center

Courthouse Rock and Jailhouse Rock are only visible from a distance.
