The Fondation Beyeler in Riehen, Switzerland, is expanding its museum ensemble with three new buildings by Swiss architect Peter Zumthor, an enlarged and restored park, and the adaptive reuse of several historic structures. The expansion extends the existing museum designed by Renzo Piano, adding exhibition, education, cultural, and public spaces while opening a previously private section of the surrounding landscape to visitors. The expanded ensemble will begin welcoming visitors on September 26, 2026, during a preview phase running through January 14, 2027, before fully opening on January 15. Zumthor's additions comprise the Wyss Museum, the Ammann Pavilion, and the Erlen Torhaus, positioned within the existing landscape and differentiated through their programmes, forms, and material treatments.
