Look very, very good. But I agree with @themugbearer, the architecture does look very human, almost Italian.
I think you should make it more fortress-y, maybe look at @Oomatu's designs of Mangai.
Also, I am not really that sure about the colors you've chosen for that lighthouse. The bright red and light blue seem a bit out of place. (Although I know Tahu has those colors on his armor, in this set, it looks out of place because of all the black and brown-orange)