Study sheet with buildings

Study sheet. Upper left, a building with a crow-stepped gable. Next to it, a detached building with a stepped gable and a small tower. On the right, a view of a street with houses and a round tower with crenellations. Lower left, a building with a stepped gable and an entrance gate. In front of the house, a bridge. Lower right, a view of a street with a house with a stepped gable and a church or chapel. Sheet 4 verso from a sketchbook with 41 sheets.