Hard against the Rialto Bridge, almost swallowed by the market buildings, San Bartolomeo is the invisible church of central Venice: founded in 840 as San Demetrio, martyr of Thessalonica — by Marco Orseolo and his son Bartolomeo according to Sansovino, then rebuilt with three naves by the Salonesi, Belegna and Vallarella families — renewed under Doge Domenico Selvo in 1170 and dedicated to the apostle, and seat of sixteen scuole and confraternities, it was the spiritual reference point of the German merchants of the nearby Fontego — who here, on the initiative of Cristoforo Foscari, says Sansovino, commissioned Dürer’s Feast of the Rosary, today in Prague, while Sebastiano del Piombo painted for it the organ shutters that ended up in the Accademia.