Acueducto de San Juan - Credit: Wikimedia Commons
The Old Piedras River Aqueduct (Spanish: Antiguo acueducto del Río Piedras), also known as the San Juan Waterworks (Acueductos de San Juan), is an aqueduct in the barrio (district) of El Cinco of San Juan, Puerto Rico. It is by the Piedras River, next to the University of Puerto Rico Botanical Garden. This aqueduct dates to the mid 19th century and it was important for the urban development of Río Piedras. Read more on Wikipedia
Source: en.wikipedia.org