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The Forum Museum is located beneath the plaza containing the Cathedral and Basilica of Our Lady of El Pilar. The plaza was built atop the ruins of the forum. One can see the columns used in the forum, a lot of pottery dug up, and parts of the sewer. The museum has very good explanations about the sewers and the running water in the city, brought to the city by aqueducts. Lead pipes brought water to every house during Roman times.