Presidio of Tucson

 (1776-1856) - A Spanish presidio established in 1776 by Franciscan friar Francisco Tomas Garces in present day Tucson, Pima County, Arizona. Became a Mexican presidio after the Mexican War of Independence in 1822 and an American post after the Gadsden Purchase in 1856. Abandoned in 1856 and destroyed in the 1860s. Also known as Presidio San Augustin del Tucson.

Spanish Period (1776-1822)
A Spanish Presidio established in 1776 by Irish mercenary, Hugh O'Conor and Franciscan friar Francisco Tomas Garces with troops from the Presidio of Tubac. This presidio was part of a network of presidios and missions in present day southern Arizona. These presidios were under constant attack from hostile Apache Indians and had difficulty protecting themselves and the surrounding missions. The southern Arizona presidios included:

The original stockaded post evolved into a 750' square adobe fortification with a 2' thick adobe wall, 12' high surrounding the square plaza. Towers were located on two opposite corners and a firing platform ran along the top of the buildings along the wall. The Commandant's quarters were in the middle of the square with soldiers quarters lining the walls. The Presidio encompassed an area enclosed by present-day Washington, Church, Pennington and Main streets.

Mexican Period (1822-1856)
Control of the Presidio passed from the Spanish troops to Mexican troops at the end of the Mexican War of Independence in 1822. Mexican troops garrisoned the post until 1856 when the Gadsden Purchase was implemented and all of present-day southern Arizona became part of the U.S. The American Mormon Battalion briefly occupied the Presidio on their way to San Diego in 1846 during the Mexican War.

American Period (1856-Present)
After the implementation of the Gadsden purchase in 1856, U.S. Dragoons briefly occupied the Presidio. The Presidio was demolished in the 1860s.

Current Status
In downtown Tucson, Pima County, Arizona. A re-creation of the northeast corner of the original 1775 Spanish presidio is at Washington and Church streets and open for self-guided tours.

See Also:
 * Arizona Santa Cruz Valley Fortifications

Sources:
 * , page 46.
 * ,page 16.

Links:
 * North American Forts - Fort Presidio of Tucson
 * City of Tucson - Presidio San Augustin del Tucson
 * Founding of the Presidio of Tucson