
Glenwood Canyon
The first time I drove through this canyon, it was 1979 and this was the final 12-mile stretch of the Interstate Highway system that was not 4-lanes. The engineering feat of cramming four lanes of highway through this canyon is mind-boggling. One of the first completed features in the canyon was the Grizzly Creek Rest Area. Then, it served as a staging area for construction equipment and supplies, now it's a shady respite from the road. When I first drove through it, it was a muddy single track.