On his visit to Testaccio on 22 March 1777, the Welsh artist Thomas Jones made a watercolour of the English cemetery at the foot of the Pyramid. This and two other views that he made, of Monte Testaccio and of the customs house (La Doganella), illustrate the areas topography and how visitors access to the Recinto di Testaccio was controlled. Earlier that month, on a visit north of the city, he made one of the few known drawings of the burial-ground at the Muro Torto, where heretics were buried before the Protestant Cemetery came into being.