Ivan Aivazovsky, Neapolitan Lighthouse, 1842
Ivan Aivazovsky - The Bounding Waves, 1898
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Martinus Rørbye - "The Palatine Chapel in the Palazzo dei Normanni, Palermo, Italy" (1842)
lily-of-the-valley stuff is usually in green but blue is a refreshing change of scenery
Empress Elizabeth of Russia in Tsarskoye Selo (1905) by Eugene Lanceray. Tretyakov Gallery.