Zempoala aqueduct, State of Hidalgo, Mexico. Friar Francisco Tembleque, engineer, 1553 - 1570. Designed to carry water from the source in one mountain range to the City of Otumba (approx. 27 miles) using technology from the Aztecs as well as that brought to the Americas by early Spanish settlers and military.

Source: "The Aqueduct of Zempoala, Mexico," Engineering News and American Railway Journal, 7 July 1888, p. 3.

Zempoala aqueduct elevations, State of Hidalgo, Mexico. Friar Francisco Tembleque, engineer, 1553 - 1570.

Source: "The Aqueduct of Zempoala, Mexico," Engineering News and American Railway Journal, 7 July 1888, p. 2.

Zempoala aqueduct - general elevation and plan, State of Hidalgo, Mexico. Friar Francisco Tembleque, engineer, 1553 - 1570.

Source: "The Aqueduct of Zempoala, Mexico," Engineering News and American Railway Journal, 7 July 1888, p. 2.