Its buildings were built during the 17th century , because of a single member of the local Stockalper family . Its older houses are very Italian in appearance , while its most prominent buildings ( Stockalper Palace , former Jesuits ' college and Ursuline convent ) all date from the 17th century , and are due to the generosity of a single member of the local Stockalper family , the baron Kaspar Jodok von Stockalper .