Yeah, the horizontal ripples of the water contrasting with the harsh verticals of the castle are just (chef's kiss) gorgeous. Beautiful composition.
Really like all the cluster shapes in this. The vertical ones give the castle a nice "rising" feeling, plus the shades make it seem like there's more structures behind.
Still, my favourite part is where the vertical clusters in the reflection cross the horizontal ones in the water, with those nice diagonal lines framing the reflection on either side. Really amazing stuff 
Dreadfull indeed. Neat! Feels almost like real brushstrokes in some places.
Wonderful execution of a painterly style, love the luminous colours!