While on my honeymoon in Greece (see my honeyblog part 1 HERE and part 2 HERE), I became obsessively drawn to the beautiful doors I kept seeing everywhere. I literally could not pass a door without snapping a picture. I compiled my faves into a little Instagram photo project I hashtagged #doorsofthecyclades. :D (To answer your question, yes. I am weird.)
Naxos has the ultimate door - the giant marble Portara.