>>106018 (OP)If we define "cool aesthetics" as in the visuals stand out in a unique manner, not just that the animation is good (an anime can have great animation but not have a particularly unique style) then some the most obvious ones that come to mind are VHD Bloodlust, Wicked City, Galaxy Express 999, Tenshi no Tamago, Space Adventure Cobra and I suppose GITS and GITS2 Innocence should be mentioned as well.
There are many others with great animation but that are less special in an "aesthetic" manner.