 The church , without an apse and a transept , maintained its original single @-@ nave plan until at least 1627 . In 1662 the naves had become three , separated by two rows of square brick pillars and surmounted by vaults . The church had five altars in 1627 , increasing to six in 1649 . In 1726 the closing of its side gate along the Borgo Vecchio made room for another altar . 
