This work addresses a symbolic intervention against the uncontrolled proliferation of skyscrapers that increasingly invade and dominate urban space. The skyscraper is approached as a vertical structure that produces power, hierarchy, and domination—an organism that becomes dominant within the city through its desire to rise and endlessly expand. The condom that envelops the building functions not as a protective object, but as a deliberate camouflage intended to halt reproduction. The structure remains visible; however, its capacity to produce, spread, and multiply is suspended. The box beneath suggests that this intervention is not an individual act, but a systematic and repeatable method. Prophylaxis reveals that architecture is not a neutral field, but a mechanism of control that operates through space and generates power relations. By targeting uncontrolled architectural growth in the city, the work questions the ideology of growth and its normalized consequences.