We love showing you what our wonderful owners have created, whether it's a quirky conversion or an architecturally-awarded self build, they all have a story to tell. Here are 20 of our favourites. They include converted buses, horse boxes, railway carriages and even a WW2 bunker. There are floating cabins on lakes, cave houses, windmills, chapels, treehouses, and many more extraordinary places for you to stay...