Construction is recorded to have begun exactly at 6.48pm on 20 March 1437, and though the castle was declared officially completed in 1446, work was still being done in 1454.Though contemporary sources credit Malatesta with its design, it employed a coalition of architects and engineers including Filippo Brunelleschi, who visited Rimini for two months in 1438 as part of a series of inspections of Malatesta fortresses across Romagna and the Marche.The fortress is characterized by large square towers and scarp walls, which would have fed into a moat.[2] The city entrance was offered by a double ravelin with drawbridges, adorned with a coat of arms, likely sculpted by an artist from Veneto.The central part of the castle was also the Malatesta residence, with rooms decorated with tapestries, curtains, and frescoes.
