While the name 'Querétaro' might not mean much to people outside of Mexico, it sure does to us here at WCL and to the UNESCO. 'Querétaro' is a colonial city located approximately 200 kilometers north of Mexico City that was established in the 17th century and which has been designated as a World Heritage Site by the UNESCO. Split in two sections with a rectilinear section and another one with picturesque winding streets, the most prominent colonial monument in the city of 'Querétaro' is its aqueduct.