The start of the Cwtch was finding a broken fire place in a skip at the recycling yard. We repaired it, painted it, added mantelpiece and hearth, and put it in a snug looking space under a willow tree in the garden. We made a building to fit that space, the fireplace as the focal point.
Fence posts marked the corners, and the walls between them were of strand board, faced with bamboo. The roof was extremely challenging, as the building was such an irregular polygon with no right angles, within a thicket of willows, in a very wet bog, with a stream running alongside.
We made the structure from battens, like an umbrella, and used plywood in between, backed with roofing felt. No 2 panels were the same.
The top was made from panels of opaque poly-carbonate, topped by a cap made from a copper water tank and a copper bowl. As the floor was so boggy, we laid down a foot of sheep's fleece, topped by 3 tons of gravel, then an outdoor carpet. It feels dry, with a slight softness.
It is an utterly unique building, made to fit this space, and not constricted by any plan, imagination free to fly.