Upper Lawn, Solar PavilionIn 1958, the architects Alison and Peter bought a derelict cottage on the Fonthill Estate in Wiltshire, southwest England. Over the next four years they transformed it into a country home for their young family and an extended experiment in the methods and materials that would shape their practice; a pavilion drawing on the tradition of the English folly, known as Upper Lawn or the Solar Pavilion. Retaining the cottages original stone walls and one of