1983: A six-year-old London boy, Alex, saw the destruction of the Amazonian rainforest on the BBC news. A few weeks later, his grandmother took him to see Return of the Jedi. The Ewok tree village on Endor planted an idea - our forests would only survive if trees had a value to us humans, he thought, other than a monetary one. If we used trees as living accommodation, that might just save them! The seed of treehouse architecture had been sown. Many years later, after training as an architect, Alex conceives 'Tentsile' as a usable space created through pure tension. The lightweight, portable treehouse would use three anchor points to create a "living space" suspended between the trees ...and so began the process of designing and prototyping affordable, habitable, tensioned tree structures.