Presidio Park

Presidio Park is a city historic park in San Diego, California. It is the site where the San Diego Presidio and the San Diego Mission, the first European settlements in what is now the Western United States, were founded in 1769.

In 1773 the mission moved a few miles upriver while the fort remained on Presidio Hill. The presidio had been established to protect against Indian attacks or foreign invasions. As the need for such protection disappeared, people preferred to live in Old Town at the foot of the hill, and the fort was gradually abandoned. It was in ruins by 1835.

Source: Wikipedia