World’s tallest 3D-printed tower unveiled in Switzerland
Tor Alva, one of the world’s tallest 3D-printed structures, was unveiled in the small Swiss village of Mulegns on May 21, 2025. Meaning 'White Tower' in the Swiss regional language of Romansh, the nearly 30-meter-high, white concrete tower, a collaboration between ETH Zurich and the Origen cultural foundation, showcases advanced digital construction techniques. They say it is the world's tallest 3D-printed tower. Designed to serve as a cultural hub, the tower aims to revitalize the village, which is home to just 11 residents and faces depopulation. The structure, built without traditional formwork, features 32 sculptured concrete columns created through robotic additive manufacturing, or 3D printing. A novel concrete mixture and a new reinforcement method, developed by ETH researchers, enable the tower’s load-bearing capacity.
REUTERS / BIRDVIEWPICTURE / ETH ZURICH / DIGITAL BUILDING TECHNOLOGIES
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