an interior shot of the amazing chapel built by Italian Prisoners of War in the second world war. I'm inserting a link here, but for those unfamiliar with the term Nissen Hut, it was a simple design of building that was used extensively in the first and second world wars in Britain and the Commonwealth.

http://www.undiscoveredscotland.co.uk/eastmainland/italianchapel/

Basically, a corrugated steel structure, pre-fabricated.