I know you’re going to ask, so: (1) No, we didn’t hike to the canyon floor and (2) We didn’t do that walk with the glass floor on the north rim. (I couldn’t even see it, in fact. Did you know the canyon is 16 miles across in some places?)
Desert View Watchtower (1932) on the east side of the South Rim
That little line at the bottom is the Colorado River. It’s 300 feet wide, believe it or not.
The canyon says goodnight.