Garden Of Earthly Delights (Exterior Panels) by Hieronymus Bosch

The exterior panels of The Garden of Earthly Delights show the world during creation, probably on the Third Day, after the addition of plant life but before the appearance of animals and humans.

When the triptych's wings are closed, the design of the outer panels becomes visible. Rendered in a green–gray grisaille, these panels lack color, probably because most Netherlandish triptychs were thus painted, but possibly indicating that the painting reflects a time before the creation of the sun and moon, which were formed, according to Christian theology, to "give light to the earth". It was common for the outer panels of Netherlandish altarpieces to be in grisaille, such that their blandness highlighted the splendid color inside.
(https://en.wikipedia.org/wiki/The_Garden_of_Earthly_Delights)
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Dimensions (h/w/d): 87 153 (221 389)