Throughout Santiago, Chile, numerous water towers mark the urban skyline as modern ruins of industrial heritage, serving as cultural landmarks of the city’s collective memory and identity. Once abandoned and emptied of the water they once held, these structures have instead become inhabited by sound through distinctive acoustic properties, turning functional absence into aural presence. This article develops an aesthetic practice of acoustic archaeology within industrial architectural heritage. Focusing on the water tower and inground reservoir at Quinta Bella, the research investigates their aural architecture through acoustic activation as a creative practice, inviting us to explore a space through its particular acoustic “voice.” On this occasion, the voices of the water tower and the inground reservoir at Quinta Bella are compared, revealing how the acoustic character of these structures constitutes an aesthetic experience that uncovers hidden knowledge of industrial memory.