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It is difficult to start any retrospective text on 2020 without sounding too cliché. While facing an invisible enemy that changed everyone’s lives, this past year has taught us that humanity is more fragile than we ever imagined. At Archdaily, it’s our job to synthesize how the buildings and the world we live in will be impacted by COVID-19 not only in the short term but in the distant future as well. Has our perception of the built environment changed this year? And has our relationship with the tectonics of buildings changed with all of the obstacles we’ve faced along the way?

Francis D. K. Ching [1] characterizes a chimney as an “incombustible vertical structure, which contains a duct through which smoke and gases from a fire or furnace are pushed outwards and through which an air current is created.” While its pipes can be hidden in walls or other structures, the chimney top usually remains prominent in order to transfer dangerous gases from the inside out without dirtying the interior or harming the health of the occupants. Being vertical elements, there are chimneys that become major landmarks in the urban landscape, especially in industrial projects. At the time of drawing, deciding on the “weight” that the chimney will have in a project is essential. At Casa Milá, for example, Gaudí crowns the building in sinuous and curvy sculptural chimneys. In other cases, the solemnity of the building aesthetic is mirrored in its chimney, whereas in others, the architects render the chimney as hidden as possible. Recently, too, many chimneys have been refurbished for new uses or to accommodate new cleaner technologies. Whether it takes a prominent role or is hidden from view, see below some chimney design tips and possibilities of use.

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