Completed in 1997, the Kunsthaus Bregenz is clad in glass panels resembling—in the words of Swiss architect Peter Zumthor (*1943 in Basel)—"lightly ruffled feathers." During the day, it is a semi-transparent glass structure, while at night it becomes a thirty-meter-high glowing cube, a statement in light. The interior of the building—a stack of three rooms offering an exhibition space of 1,800 square meters, with a highly sophisticated air-conditioning system that both heats and cools—is constructed in smooth concrete, terrazzo, matt glass, and indirect natural light.