Madrid corre por Madrid (Madrid runs through/for Madrid is a run through Madrid most beautiful streets. I litterally ran into this running crowd totally unaware of this event, as I was looking for quiet places on a Sunday morning. I took the challenge, and was pleased to discover interesting patterns of lights and shadows, plus some diagonal movement which gave a special dynamic to the picture.
Canon 5dMark III, f/8 1/320, ISO 100. Lense: Canon TS 17mm