Mission San Diego, officially known as Mission San Diego de Alcalá, is the first of the 21 California missions established by Spanish Franciscan missionaries. Founded in 1769 by Father Junípero Serra, it played a crucial role in the spread of Christianity among the Native American population in the region. The mission is located in present-day San Diego, California, and is recognized for its historical significance and beautiful architecture. The mission served as a center for agriculture and education, helping to develop the local community. Today, Mission San Diego is a popular tourist destination, featuring a museum, gardens, and a church that reflects the rich history of the California missions and the Spanish colonial period.