The Franciscan Church's vaults host 3 models: the model of historic Poznań, the model of first Piasts' town and the model of the Old Market Square. The first one depicts Poznań as presented in Braun-Hogenberg's picture of 1618 in the scale of 1:150. The second one shows the appearance of Poznań in 10th century. In consideration of blind people, third model (1:100) has been made in the convex technique. The descriptions of the elements are in Braille.