This proposal for the new Guggenheim museum in Helsinki uses digital methodologies to design a carbon-negative building which is largely made of recycled and low-grade timber. A custom-made algorithm is used to efficiently organize thousands of low-grade timber strands and posts, which would normally not be used in construction, into a large-scale volumetric roof structure with a rich material character. The ground floor of the museum is completely transparent and accessible via multiple entries; the museum has the possibility to run different security regimes, shifting ticket control and bag check to the first floor, which would effectively turn the ground floor into a generous, freely accessible civic space, a meeting ground for the city of Helsinki