Is it a shed or a sauna or a trailer or both ?? - we don't know, we don't care and (more importantly) - we don't wear any underwear - in fact we all go Shed Naturale !!
My son and I built our Shedna (??) on a trailer cos we couldn't work out where to put it - it is made to a proper spec and weighs over 1 and a quarter tons but stays lovely and warm for hours - it has a homemade woodburner and seats 10 - everyone welcome !!