Found these pics of a summertime treehouse exhibit in Regents Park London. It was a very inspirational experience for our kids and more so for Honey and I.
The tree houses and installations around the place we're amazing. There was even a little living room area where you could write old school letters and they would send them for you! The atmosphere was very Sunday chill and people were just sitting around reading, talking, picnicking, playing and the occasional hippie was dancing to the sound of the breeze;)
I wanna recreate this place one day...