In the UK there is a rich culture of allotment gardens; no doubt because of the weather, there is also a culture garden sheds, where one can warm up a bit or get out of the rain. (we showed a lovely one made out of pallets earlier). One probably doesn't want to order up a fancy one in such a public place, so why not build it out of bottles? This one was built of empty lemonade, cola and ginger beer bottles. Instructions at Crafty People, via Shedworking.
Simon Kirby's Allotment shed made from pallets.