Les Huguenots: sketch of the opera set for the first act (1896). Pen, watercolour and gouache; 380 x 442 mm. For the Théâtre national de l'Opéra - Palais Garnier production of 7 June 1897. See also File:Meyerbeer Huguenots ActI maquette AugusteRubéPhilippeChaperon.jpg, a model of the set.
Original public domain image from Wikimedia Commons