These beautiful structures are found everywhere; often (if big enough) being converted into homes. They were originally built as practical farm accessories, much like pig sties or cow bays, but their absolute beauty stands them apart.
The example above is from close to Cahors, in the town of Lalbenque; the centre of the Truffle industry.
If we can ever find a builder, the Magnon's will build a small tower this year to act as a spare room. Sadly it won't have the allure of the above, but it'll probably be OK.