One of the things that Harry will learn when he goes to training school is how to navigate around roadworks. With that in mind, whenever we know of roadworks locally, we always try to take him to have a look.
When he was younger Harry was always fascinated by the sandbags draped over the base of the roadworks signs and insisted on stopping to have a good sniff, but now he just strolls through as if he did this sort of thing every day of the week.