It was built in successive stages in a polygonal shape on orthogonal axes through the construction of 32 large and small towers, with the formation of a protective moat and with four drawbridges next to the four entrance gates.

The walls today are all intact except for a stretch destroyed in the 16th century during the Cambrai war, and the skilled detail of the construction are still easily visible.

[4] Among the elements of interest, the Rocca di Porta Bassano still retains the defense apparatus of the keep and entrance gates.

In addition, several new points of ascent to the walls have been established, via erection of stairs on the breach, as well as the construction of a stairway and glass lift inside the Porta Vicenza Tower, and stairs, the wooden gangway and the glazed entrance roof in the Torresino Church, plus the building of the connection between the Captain's House and the Porta Bassano Tower.

In 2011 the town enacted a law which stated that no more licences for shops selling kebabs may be granted to businesses within the city walls.