The only part of the Greek defensive wall still remaining is under the road at the Porta Parsano Nuova (new Parsano Gate) and can be viewed from close to the same place. Another ruin of the Greek wall other than that of the Marina Grande Gate and very limited in size is the small tract (just over three metres) of the western end located in Via Sopra Le Mura.
The Roman town was built over the Greek one following the same urban plan with walls of large isonomic blocks. These walls stood to defend Sorrento through the Middle Ages. Rebuilding began in 1551 and was only completed in 1561 after the tragic Turkish invasion.
From 2010 the walls of Parsano have been restored and it's possible to visit everyday.

(source: Surrentum Magazine)