Fascinating building. I do think if you are photographing something where the intention is symmetry it is better to square up the image and straighten the verticals. It is very easy to do in Lightroom and or Photoshop and probably also in other software programmes. Happy to explain if you wish?
@marshwader thankyou for your advice. I also like straight verticals and am not sure how else I could get them straighter. I concentrated on the front door as that was the centre point. If I straighten the windows other parts of the image are thrown off. I use Photoscape X but maybe you could give me a few pointers and I'll give it a go. Thankyou. I do appreciate constructive criticism.
It is a magnificent structure.