In spring of 2013, I decided to bust out and build a tree house for my daughter Ursula, which I’d never done before. I remember having one as a kid and loving it. I wanted one that I could build in a day, wouldn’t be too high up so as to worry me or other parents, and which was SIMPLE in design to maximize playtime and allow for adding on later. It’s light, open and can go up and down easily.