Almost a barn...

Nice work - at first glance I thought 'what scale', because it looked huge.
What did you use for the windows? I've found that if I cannot find some 'glass', I can just run a sleve thhrough the laminator, then I have plenty

I think I found corrugated card without backing in a craft store - I have been stocking up on materials for a shanty town for some Post Apoc.