We humans long for daylight, for views of greenery, and for a sense of connection. Today, however, transparent building envelopes seem to be less in demand. When what awaits outside appears increasingly threatening, many prefer to shut themselves off. Instead of providing views and insights, places of retreat are being created: the private bunker industry is booming. What possibilities for transparency are still desirable in the context of social uncertainty and urban densification? And do light-filled envelopes even make sense if contemporary energy concepts are to be implemented? Light, air, and sun are no longer welcome without restriction. The spaces behind the climate envelope must be protected from solar gain and heat loss. Low opening rates, smart building technology, and facades whose appearance is determined by algorithms are the means of choice. In these scenarios, humans become a disruptive factor and are better off remaining passive. Anne Lacaton and Jean-Philippe Vassal show how things can be done differently. Near Brussels, Lacaton & Vassal, together with 51N4E, have just expanded a residential block in the Peterbos district with new winter gardens based on a proven formula (photo). Transparent and translucent sliding elements alternate, with curtains providing sun protection or privacy as needed. The result is spaces that can be adapted to circumstances, but where humans have the final say. A closed curtain can seem uninviting—but it can be opened at any time.
