The art in Utena is really strange at first. It has some of the most gorgeous backdrops I've seen. They're really pretty, soft, and dreamlike. The characters on the other hand are a real contrast, sharply defined, standing out a bit from the backdrops. Usually, at least, there are times when the character are also presented like a watercolor painting, but that's going a bit too far now, and I haven't seen nearly enough to make any obersvations about what was intentional or just happenstance.
The world itself has a technological level that's roughly at the mid 90ies of our time (digitla stopwatches, cars, modern sports, etc.) but at the same time is full of medieval imagery and mannerisms, like the duels, the castle, the academy itself which looks very much like a 17th/18th century European palace:
The upside down castle and the duelling ring are inside the wood behind the buildings.
It also has Utena slapping someone who touches her hair trying to "flirt" with her, so that was an instant win after Tuxedo Creep sniffing Usagi's hair in Crystal. Utena itself is also an interesting idea, while she's trying to emulate a fairy tale male role, she's still very much a girl (she even says so herself early on), not a woman who wants to be a man. She just wants a man's job, more or less (it' also very easy to infer her bisexual nature, just look at the image with her an Anthy, but it's not explicitly stated... not sure if it will be in the show itself - doesn't really matter either).
Oh, and if you want to have another reason to watch: Rebecca Sugar said it was one of her favorites, and there are references in Steven Universe (but I guess that wiki list already told you that).
edit: Oh, right, and because I was worried when I first read it, the episodes are all named Duel XX where XX is the epsiode number, but that does not mean every episode has a duel. But every duel does have a good deal of stock footage, but not to pad the runtime, that's an artistic choice this time.