A View near Volterra, Jean-Baptiste-Camille Corot
Wow. I just love these direct, observational landscapes from Corot — filled with light and the feeling of immediate atmosphere. You can see why the Impressionists thought so highly of him.
Original is in the National Gallery of Art, D.C. The image on the linked page is zoomable. Click “Download” for larger images. You have to create a (free) account to download the high-resolution images.