We were also quite surprised by the odd, heavy structure wrapping around the tower proper and learned that this was a support system temporarily applied because the roof's weight is so heavy that it eventually caused damage to the wall. Since the roof is not new, but everything was diligently restored a few decades back, I'm wondering how they could miss such an important static issue....
The city has various fountains and wells, and around one, we found something we really loved: all kinds of concrete and stone containers, of the kind usually placed to prevent unauthorised parking, had been planted with herbs and vegetables like coctail tomatos, small peppers or cucumbers, and even one or two tiny fruit trees, and came with the explicit instruction to make use of them so they would serve their purpose and grow better.
They looked beautiful and smelled delicous, but the explitic intent to plant them for the use of whomever comes by or lives close is what really deligthted me.