« A C T » aims to rethink the relationship of natural and artificial realms in an « ALL INTERIOR ». As a prototypical investigation into a new residential typology for high-rise buildings, the project deals in and with extreme heat conditions by introducing an architecture of gradients. It seeks to establish a self-defined interior context which enables a new nature to nurture gradually from the inside-out, ultimately resulting in a new cultural identity based on a local climate discourse. The tower promotes a contextual shift away from current dependence, provoking a polyvalent interior-habitat where prevailing exterior conditions are not the predominant context anymore. This consequently sets production of climate and the built environment back into a major architectural discourse of metabolism, and the UR-thought of shelter.