An exceptional tempera on canvas, lagoon view with ruins and characters, school of Veneto, 18th century, attributed to Andrea PORTA (Verona 1720 - 1805), (with the frame : 240 cm x 150 cm) (with the frame : 95 in. x 59 in.). A royal provenance : Joséphine de Leuchtenberg (1807 - 1876), Queen consort of Sweden and Norway, Princess of Bologna and former Duchess of Galliera, granddaughter of Joséphine de Beauharnais