The pavilion in the grounds of the Menil Collection houses a permanent exhibition of Cy Twombly's works. It was to form part of the museum, but at the same to be distinct from it. As in the main museum here the principal source of light is natural, filtered by four superimposed layers of roofing. In addition the floor is made of natural wood, which reflects more light and contributes to a more diffuse, less direct and less dramatic illumination.