For the 10th edition of the green challenge, the National Postcode Lottery asked us to come up with a renewed concept of the green challenge where nature, innovation and technology were the core values. Among other things, we created a new layout for the reception area, plenary room and exposition space. The exhibition space embraces the plenary session, which was still invisible to the visitor upon entering. After opening the plenary room, that literally formed the center of the event, people were surprised by the technical landscape that awaited them.