I got a chance to visit the Smithsonian’s Air and Space Museum this afternoon. The scaffolds around the Enterprise Space Shuttle are so workers can do something with the rear of the fusalage. Workers were busy either reattaching it or separating it for some reason.
I was disappointed too because they had the rear doors open and stairs leading up and into the orbiter. I first thought they were letting museum visitors aboard but it was only to give workers internal access to do their jobs.