This pavilion is one of two that has no curtains encompassing it, the other being Slow solar event. The top is hung with triangular wicker panels that form a star with sixteen rays: a compass rose. The densities of the weaves vary according to the directions of the compass rose; east and west are darker than the ordinal directions of northeast, southeast, southwest, and northwest. Coloured glass discs are integrated into the rays facing north and south, with green indicating north and red, south. 
A parabolic mirror hung at the centre of the compass rose reflects the shadow of the whole construction as it appears on the ground below, together with the visitors and their surroundings, subsuming them into the work.
As the earth moves in relation to the sun, the shadows travel around the space and extend outside the boundaries of the open pavilion.