Ca' d'Oro (correctly Palazzo Santa Sofia) is a palace on the Grand Canal in Venice, northern Italy. One of the older palaces in the city, it is known as Ca' d'Oro ("golden house") due to the gilt and polychrome external decorations which once adorned its walls. The principal façade of Ca' d'Oro facing onto the Grand Canal is built in the Bon's Venetian floral Gothic style. Other nearby buildings in this style are Palazzo Barbaro and the Palazzo Giustinian. This linear style favoured by the Venetian architects was not totally superseded by the Baroque one until the end of the 16th century.
On the ground floor, a recessed colonnaded loggia gives access to the entrance hall (portego de mezo) directly from the canal. Above this colonnade is the enclosed balcony of the principal salon on the piano nobile. The columns and arches of this balcony have capitals which in turn support a row of quatrefoil windows; above this balcony is another enclosed balcony or loggia of a similar yet lighter design. The palace has (like other similar buildings in Venice) a small inner courtyard.