It was the largest triangular bastion in the city, with a gorge angle, long oblique faces, sharp and set back sides to accommodate the gun ports. The foundation area was adjacent to the land of the former Dominican convent of San Rocco, from which it took its name. It was erected starting in July 1523 with the superintendence of the Paduan engineer Sebastiano Bonmartini and at the end of 1524 it was already decorated with a cordon of Istrian stone and three shields of Veronese marble with the ducal insignia set on the three vertices. In 1862 the Municipality decreed its demolition, which was completed only in 1872. A short distance from the site, the remains of the eighteenth-century doccile stand out, adjacent to the pumping plant installed in 1927 to keep the wall drained. The perimeter of the bastion's foundations, which emerged during archaeological investigations conducted in the late 1970s, was re-enacted through the planting of hedges.