Here's my all-time favorite painting by Hieronymus Bosch,
The Garden of Earthly Delights. It's made of four pieces on a series of folding panels. I've used a part of it in my avatar.
Here's one of the pieces:
Here's the middle, which is my favourite:
And here's the final panel:
On the panels that open up you can see
creation.
Post some of your own favourite art.