In 2003, The Weather Project was installed at the London’s Tate Modern and filled the open space of the museum’s great hall. The artist Olafur Eliasson used humidifiers to create a fine mist in the air via a mixture of sugar and water, as well as a semi-circular disc made up of hundreds of monochromatic lamps which radiated yellow light. The ceiling of the hall was covered with a huge mirror, in which visitors could see themselves as tiny black shadows against a mass of orange light. The public often responded to this exhibition by lying on their backs and waving their hands and legs. Open for six months, the work attracted two million visitors!