These Art Nouveau images are by Artist Melissa Somerville (Deviant Art Page), and feture characters from the Legend of Zelda series. Her Deviant Art page is full of cool illustrations based on among other things the Zelda Universe and the Okami Universe.
I can’t seem to find a fill size image of the Link and Zelda Images above just a Triptych.
Via Blue Dog Eyes
I love this image of a tree by QiQiGallery available on Etsy, it’s labeled as a modern abstract but I like to think that each panel represents a season, I don’t know if that was the intention. You can buy this for $365 US + shipping from Canada. If you like what you see the same gallery has a number of other paintings in a similar style.
I searched for a word for the equivalent of a triptych but with four images the best I could come up with was “Quiptych” or “Quadtych” there appear to be Flickr groups for both…