I've been on a little excursion today, to Hill Close Gardens in Warwick. I have been meaning to go for ages now, and am really glad I have finally got around to it. It is a restored Victorian 'allotment' site, where local business owners (who lived above their premises and didn't have gardens) could go and garden. Each plot is a small private space, all similar in shape and size but all different in the way they are laid out and designed. Below is one with a stumpery, and above, a view across the garden to the 'shed' - I say shed but they are actually solid, and very attractive brick structures.
They are not just vegetable patches either, although most of them had a pretty impressive veg patch. The ornamental borders were gorgeous and most of them had at least one very mature apple tree.
How about this for a garden shed (cold frame in front) - covered in brushwood, and through the french windows at the front you could see the internal walls had been decorated with hundreds of oyster shells.
Or, how about the interior of this octaganal 'summer house', with open fire, leaded light windows and carpet on the floor?