"Impression, Sunrise," Claude Monet, 1872.
Monet needs no introduction, but this canvas deserves note.
In 1874, this was first exhibited as part of a group of artists who had similar outlooks. The title of "Impression, Sunrise" actually ended up giving the Impressionist movement its name.
Depicting the port of Le Havre (Monet's home), some of accused it of being unfinished and Monet being a sort of con artist in claiming it was only an "impression." But...I think that's sour grapes. Definitely a lovely image.
From the Musée Marmottan Monet, Paris.