One of the small things that I've noticed about the island of São Miguel is that most properties have their utility meters (for things like electricity and water) in small vitrines next to the street. Here are a few examples that I came across:
Utility meters aren't the sexiest of things. So if you have to have them on the street for quick readings, having them tidily installed in niches behind glass is, I guess, a better look. It also offers security.
But apparently the other reason this is done is to protect them from the weather. The Azores have a mild maritime climate characterized by high humidity and frequent rain. This, combined with the salt air, could corrode the equipment.
And so they lock them up in vitrines.