Provence is a quite dry area. So to avoid and/or fight fires, there are water tanks nearly everywhere. Some are made of concrete and buried in the ground, some others are like this one, metal made and "dropped" around. And, of course, when they're like this one, they're tagged.
So I found interesting this mix of nasty "street art", human facility and nature (with little snails installed on the tank)
Allauch - France