The Aeolian Tower
You have one evening left in which to visit The Aeolian Tower, near Waterloo Bridge, South Bank, London. This temporary structure (part of the One Dot Zero - Adventure In Motion festival at the British Film Institute) holds 1200 wind-powered LEDs, which vary in intensity according to the breeze. Its purpose is to demonstrate that renewable energy can be used to power art and design, hardly an original concept. Still, it's Green. Shame about the art.