Switzerland. Neuchâtel canton. Neuchâtel. " Palais de l'Equilibre". Arteplage, Expo 02. Public toilets. Housed in a wooden sphere towering 27 metres above the ground, Palais de l'Equilibre sets out to acquaint visitors with the concept of sustainable development. The future of the human race depends on our ability to establish and maintain a balance between a caring and responsible society, an efficient economy and an intact environment. National exhibition. © 2002 Didier Ruef .