
Mid-way along the west side of the Basílica Menor y Convento de San Francisco de Asís, Calle Brasil (Teniente Rey) leads south one block to Plaza Vieja. Exposed in the center of the cobbled street are two archaeological sites displaying portions of the Zanja Real (Royal Canal)— the original aqueduct that was initiated in 1566 and supplied the city with water before the construction of the Albear Acqueduct in 1835.