Metropolitan (1916) - Willy Pogány

source

I know it's very pop but I really like Art Nouveau. And also pieces like these remind me of Yoshitaka Amano (of Final Fantasy, for example), whose works I love. However, I have to be fair and say some artworks are very orientalist, which goes hand in hand with the stories written around that time (don't worry, it also extends to music), since it was racist bourgeois art for the racist bourgeoisie.

Wikipedia has more external links to his work