Carlos Garaicoa's "¿Es la piedra del terror, La piedra filosofal?" interrogates the alchemical promise of transformation embedded in Cuba's urban landscape, juxtaposing the philosopher's stone—a symbol of utopian transmutation from base to noble—with the "stone of terror," evoking the concrete remnants of halted revolutionary projects in Havana. Through a Cibachrome print capturing an abandoned Microbrigade building, emblematic of the 1960s' thwarted socialist aspirations, the work probes the dialectic between ideological ambition and material decay, questioning whether the ruins of political hardship and economic stagnation might alchemically yield redemption or merely perpetuate a cycle of unfulfilled potential. This conceptual framework extends to broader themes of architectural memory, where the halted structures serve as spectral monuments to frustrated modernity, inviting reflection on the precarious boundary between terror as destructive force and its potential as catalyst for philosophical renewal.