Rachel Whiteread, “Looking Out”

For more than 20 years, Whiteread has transformed the otherwise ephemeral cavities within and around objects—ranging from the undersides of chairs to the interior volumes of entire buildings—into sculptures. Using the traditional method of building a mold and filling it with plaster, cement or polyester resin, she casts voids into solid form. The results can range from ghostly to brooding, as in a series of concrete and resin windows that appear bricked up.