How were presidios built?

PresidiOS were military forts established by colonial powers, particularly the Spanish, to protect their territories and missions. They were typically constructed using local materials such as stone, adobe, or wood, and featured thick walls for defense, barracks for soldiers, and often a chapel. The layout often included a central plaza, with buildings arranged around it for strategic purposes. Construction involved skilled labor, including soldiers and indigenous workers, and was influenced by the geographic and climatic conditions of the region.