View this artwork by appointment, at Tate Britain's Prints and Drawings Rooms
The main sketch on this page depicts the Roman remains of the Portico of Octavia with the city’s main fish-market underneath. Turner appears to have been fascinated with the various exotic shapes and colours of the fish on display, only some of which he could identify by name. Additionally, on the right-hand side the artist has also drawn a detail of the left-hand side of the structure with the surviving original columns. For a full discussion see folio 51 (D16245; Turner Bequest CLXXXVIII 50). There is also a related drawing on folio 52 (D16247; Turner Bequest CLXXXVIII 51).