Watercolour pencils and gouache on A4. I did this today at a Urban Sketchers meet up in the National Museum of Scotland - although, I guess, strictly speaking it does not fulfil the urban sketching requirements :D
(Done on 110gsm acid free sketch paper. Trees,ducks,land dine with sankura micron pen. All the blurry things done with hints of hard charcoal pencil)
Serenity... the lighting outside seemed to be playful today due to misty weather. Hence this outcome.
I swear i didn't use any filter