The metro station Campo 24 de Agosto keeps a real treasure: the ruins of a reservoir of water that existed there.
Besides being designed by the renowned Portuguese architect Souto Moura, this station in the center of the city has other reasons for its significance: it accommodates the archaeological traces of a reservoir that supplied the existent fountain. In the nineteenth century, the river that flowed there was buried along with the bridge that crossed it. Over time, and with the urbanization of the surrounding area, which was formerly rural, the memory of this past was forgotten until progress recovered that memory.
During the construction of the underground station, at the beginning of this century, what was left of the old reservoir was discovered along with other objects, including shoe soles, Portuguese ceramics, Italian glass or Chinese porcelain. To preserve these memories, the ruins were dismantled and then rebuilt in the place where they can be visited today, accompanied by explanations that contextualize the importance of these remains.