You can see one of our Pi Day activities here. It's Archimede's method for approximating Pi, by using the areas of an inscribed and a circumscribed polygon. We hope you enjoy it.
I’ve appreciated so much your pictures, but … if you come in Matera we could go in Vietri (it’s not so far), and enjoy the tradition of Vietri’s and neapolitan ancient-style ceramics, that remembers 16th -18th century Spanish domination in Neaples.
Geometry in white and blue ceramic tiles on the walls of houses in Sintra, Portugal. I could have made a real collection, had I had the time for it. Unfortunately, we were on a rush all the time.