Hi Nicole,
i think the first one is lacking a focal point / true subject. If it IS the statue, then why not move in on it? If it was the entire surrounding area you were after, then i find that not clipping all the other structures would have helped...
pic number 2 is a bit too center weighted, and the bulls eye composition does not work here in my humble opinion...i would have like to see a closer look at the subject, maybe making more of an abstract of the nice colours and textures of this structure.
pic 3. i also find that you have clipped many of the structures which takes away from the overall image. I find it quite busy. If the entracne is your main subject, it is smack dap in the middle again.
great eye on recognizing that there were worth while subjects, but i find that your compositions are lacking in all three....
of course this is only my opinion, and you can tell me to shove it up my a$$ if you choose to