Gigon Guyer’s detached house in Zurich has a hexagonal volume on a trapezoid-shaped plot.The exterior walls and the roof are load-bearing concrete, and large windows open by sliding into a recess between the outer concrete and the inner brick wall. The main living room is on the upper floor, where the ceiling rises from 2.4m to 5.2m. Photo © Maurice Haas / © Lucas Peters. Gigon / Guyer