it looks like teams of university students engaged in some kind of construction activity using cardboard. An exemplar that had been finished earlier looked like a tower you could climb into. Bologna has the oldest university in Europe and a large percentage of residents are students.
A very interesting scene of construction & ingenuity. Thank you for your good wishes re my fracture. Yours sounds far worse than mine, no surgery for me but no weight bearing for six weeks. I'm fed up already!
