The blur building is a suspended platform shrouded in a perpetual 'cloud of man' - made fog, designed by architects elizabeth diller and ricardo scofidio. The cloud can host up to 400 visitors as the building consists of a 60 x 100 x 20 - metre metal construction that sprays innumerable tiny drops of lake water from 31400 jets. The high-pressure spraying technology ensures that the fleeting sculpture will be visible in all weathers, rain or shine. Giving us the sense that it is floating in the air, a cloud passing by.