My other half,Andy, built this workshop/shed and it took him about 5 days to build.He designed and built it on his tod.I think its very impressive and he has had orders from other relatives/friends wanting one built for themselves.Its not finished inside yet but it will be an office/workshop and seperate compartments for storage.It also has a veranda that you cant really see from the picture.
At our previous home he built a treehouse for the kids that also had a veranda and a space for them to play with their computer inside.