When you go to Taos, head north to Arroyo Hondo and take a soak at the Black Rock hot springs, on the Rio Grande River. This area is all Bureau of Land Managment(BLM),so you can stay for quite awhile down on the river if you want. The rocks around this area have petroglyphs.You can also find many obsidian arrowheads in the area.
From my neck of the woods I would recommend the Headwaters of the Mississippi River located in Itasca State Park. They have rocks you can cross to say you walked across the river. The park also has Indian burial mounds, huge red and white pine forests that should be seen now because they are old and saddly dieing, many lakes and trails.
Then Bemidji, where you have Paul Bunyan and Babe. One of the most photographed sites in picture postcard history, or so it seems! Ha! Now there is a pilgramage huh? Just what everybody wants to see Paul Bunyan's toe nails at the PB museum!
Happy trails, Rustic