The original design of the Elbtower building in Hamburg was advertised as particularly sustainable due to the choice of its technologies. However, the insolvency of the developer Signa at the end of 2023 brought the construction of the unfinished tower, which was to become Hamburg's tallest landmark, to a standstill. The city was left with a huge concrete shell that now towers over the harbor. The costs of securing the construction site of the empty shell have to be borne by the public. This semester, we are therefore asking: Can there be "sustainable" design and construction in a non-sustainable system? Can we imagine other rules for the development of this building? Can we redesign these huge landmarks so that they do not stand for investor dreams and power, but for added value for urban society and cohesion? This semester is all about the redesign of the Elbtower. We are starting with the awareness that building in times of man-made climate change not only means using sustainable technologies, but also questioning the power and domination relationships that architecture like the Elbtower is supposed to radiate. The building is to be redesigned in such a way that the space is distributed, used and managed with a view to equality and collaboration.