Mjøstårnet became the world's tallest timber building when it opened in 2019.
The mixed-use tower stands in Brumunddal, Norway, beside Lake Mjøsa, whose name inspired the building's title. It was designed by Voll Arkitekter and developed by AB Invest. The tower combines apartments, offices, a hotel, and public areas.
Its structure uses engineered wood products, including glued laminated timber and cross-laminated timber, rather than relying primarily on conventional concrete or steel. Concrete was still used in parts of the building, including floor slabs, so “timber building” refers to its principal structural system rather than every component.
Mjøstårnet is often discussed in sustainable construction because engineered wood can store carbon and reduce dependence on energy-intensive structural materials. Height records in this field change as new hybrid and timber towers are completed, so the date matters when describing its record.