Throwback to the Dutch national day of urban sketching at the railway museum in Utrecht. Did this double page over 6 hours of crawling, the place buzzing with the creativity of hundreds of urbanksetchers .. what a day. #usk #usknederland #usknetherlands #usknl #urbansketchers #urbansketching #sketchbook #sketching #utrecht #spoorwegmuseum #railway #train