On the Grand Canal at San Polo, between Palazzo Dolfin and Palazzo Civran Grimani, Palazzo Dandolo Paolucci hides beneath its 17th-century skin a 14th-century Gothic body. The double surname tells its story: the Dandolo, the dynasty that gave Venice four doges (elected rulers of the Venetian Republic) including the conqueror of Constantinople, and the Paolucci, its 18th-century owners.