The bust of King Charles I as Prince of Wales set in the wall of the Square Tower.
Under Charles I (1625–49) Portsmouth began to regain some of its stature and between 1650 and 1660 twelve ships were built there. The bust of King Charles as Prince of Wales (now replaced with a replica) placed in the niche of the stone walled Square Tower at the southerly end of High Street gives an idea of how well regarded he was at that time. Another indication of this regard was that, soon after the bust was in place, the Governor recommended that all the innkeepers in High Street should set their signs into the walls of the houses as they are in all civil towns so they didn’t obscure the figure. He also ordered that, when passing it, all officers and soldiers should doff their hats.
In 1662 King Charles II married a Portuguese woman named Catherine of Braganza in the Domus Dei. Following the renewal and construction of new fortifications around the town in 1667–1685, Portsmouth became one of the most heavily fortified towns in Europe.