Wheat Field with Cypresses (1889) by Vincent Van Gogh. Original from the MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
The Starry Night (1889) by Vincent Van Gogh. Original from Wikimedia Commons. Digitally enhanced by rawpixel. Free Image from public domain license 
Irises (1889) by Vincent Van Gogh. Original from the J. Paul Getty Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Cliff Walk at Pourville (1882) by Claude Monet. Original from the Art Institute of Chicago. Digitally enhanced by rawpixel. Free Image from public domain license 
Stacks of Wheat, End of Summer (1890–1891) by Claude Monet. Original from the Art Institute of Chicago. Digitally… Free Image from public domain license 
The Repast of the Lion (1907) by Henri Rousseau. Original from The MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Tropical Forest with Monkeys (1910) by Henri Rousseau. Original from The National Gallery of Art. Digitally enhanced by… Free Image from public domain license 
Woman Walking in an Exotic Forest (Femme se promenant dans une forêt exotique) (1905) by Henri Rousseau. Original from… Free Image from public domain license