Wow! Just came across this tonight and it brought back a flood of memories of a trip several years ago to Barcelona. Parc Güell was my favorite part of the entire trip. Nice perspective here.
I like the general colors in this, though the sky is a bit odd looking. I also think it is effective how the picture leads up through the frame and to the top of the building/sculpture, whatever it is.
Design & engineering that produced an impressive piece of art. If you had used a post processing program on your photo you likely would have scored higher with this entry. The color of the sky seems un-natural to me. Perthaps removing the moon from the picture would probably have helped your score as well. Where is this & what is it?