Turner made a number of sketches surveying Rome from the Janiculum Hill, a high ridge of ground to the west of the River Tiber which offered sweeping panoramas across the historic centre of the city. This sketch shows the view looking south-east across the hill towards the Church of San Pietro in Montorio. Turner’s viewpoint is the Teatro Alla Quercia del Tasso, a small open-air theatre at the northern tip of the Janiculum which takes its name from the nearby fabled oak of Torquato Tasso, see folio 2 (D16159). The terraced seating of the theatre ascends the slope to the right and the architectural feature in the centre is a decorative tablet or fountain also visible in another drawing (see Tate D16378; Turner Bequest CLXXXIX 49). The view continues on the opposite sheet of the double-page spread, see folio 4 verso (D16164). For a discussion of other views from the Janiculum see the entry for folio 2 (D16159).