Espada Aqueduct, San Antonio, 2004
Canon 10D, Sigma 12-24 at 12. 1/250 at f/11 (ISO 800). This is the oldest working aqueduct in the U.S., carrying the water of the Espada Acequia from its San Antonio River entrance upstream by the shallower path along the top of the river bank to the mission downstream. In this case, it had to cross a tributary creek to get there.