Every year the Serpentine Gallery in London chooses an international architect to build a temporary installation. The pavilion of 2013, designed by Sou Fujimoto, is inspired by the evanescence of clouds, inviting people to explore the place in a new and unexpected way.

A simple cube composed of slender steel bars is repeated to build an anisotropic forest with areas of different density, depending on the program. Between the voids that form this pattern, transparent polycarbonate circles provide shelter from rain and reflect sunlight. Within the pastoral atmosphere of the gardens, designed in 1728, the pavilion emerges like an abstract and organic structure that blends with the vegetation. Its ambiguous, soft-edged geometry blurs the boundaries between interior and exterior. The depth of the grid at different locations produces thicker walls or thinner, transparent sections, while the topography of the grid is present throughout, where the walls, seating, and roof are all made of the same steel cubes. In this way, the organic structure of the pavilion overall is an adaptable terrain, encouraging visitors to create their own experience of the building... [+]