I think that the pineapple building idea is better for a research project. Anybody who has yomped around the Roman remains of the Med will know that the Romans used concrete. It is a bit strange, but a fact. I have been informed of this by any number of orange, sun-glasses and scarf wearing middle aged female tour guides (because they all are) in Italy, France, Greece and Turkey. The concrete house should be turned into an M&S Food. Clearly.