Wild in an urban place?

I had 1 day to spend in Nice France, and optomized my time for inaturalizing. I hiked along the coast and then over a small mountain park, but I made this observation after I got back into town on my way to find dinner, A Wall Pennywort (Umbilicus rupestris) growing out of a wall. its not an uncommon plant, but we don’t have it in the states so I thought it was neat. https://www.inaturalist.org/observations/21792029