Native American Scenic Byways
Navajo Mountain, on the Naat'tsis'aan-Navajo Mountain Scenic Road, Arizona
As of 2010, only a few Native American Nations were participating in the National Scenic Byways program. The National Scenic Byways office in Duluth was working to change that but when President Obama signed the Congressional Act reauthorizing the National Scenic Byways Program, there was no funding in it to continue to support the office or most of its programs. So I have no idea if that effort will ever bear fruit.
Puye Cliff Dwellings, along the Puye Cliffs Scenic Byway in New Mexico
Photos courtesy of Byways.org