Denver has interesting construction site walkways. This was your standard "keep the sidewalk open while making sure heavy things don't fall and smash people" plywood structure, but it was painted green, the outside wall had spaces in it leading to interesting stripes, and, while you can't really see it in the above photo, the usual "we cut a hole in the inside wall so you can watch the action" portholes were of two heights - standard standing adult height, and then low down kid/chair-rider height. This particular walkway is on 14th street where a new Hyatt hotel is being put up across from the Denver Convention Center.
