Usually, I don't make a post with just one photo but today I'm super busy and have no time.
At the same time, I would like to participate in the 
So here's my entry.
This little unimportant flower was growing inside the crack in the wall of an old fortress on the top of Montjuic hill in Barcelona.
Here's the proof.
Can you find it on this photo?
See you tomorrow, my friends.