The Porta Pretoria was built in opus quadratum with large blocks of peperino. The triple-arched, two-storeyed gate was 36 m. large and 14 m. high and was protected by a rectangular tower on either sides. The façade overlooking the Via Appia was originally adorned with statues and mouldings but only a few fragments of these can be seen today. The Porta Principalis Sinistra was built in opus quadratum and had three arches and a postern. Today we can only see the central arch which is larger then the others and the right arch with the nearby postern, both were walled up in mediaeval times.
Address: Via Alcide de Gasperi