The poem describes the many possible things that the Pedrera building could represent, from the sea or sky to a giant's face or heaven and hell. It wonders if windows are eyes and sees a quiet soldier on the roof along with fish, snakes, and leaves. The Pedrera is described as having secrets that outsiders cannot see, being like ice, a snail, a mouth, a lighthouse, or a root. It hints that the Pedrera is either a house or a cave filled with a thousand secrets.