Old Town San Diego State Historic Park – site of early mission-era activity

Old Town San Diego State Historic Park preserves and interprets mid-19th-century buildings on land adjacent to the Presidio site where the Portolá expedition camped in 1769 and where the first efforts to establish Mission San Diego de Alcalá occurred. The park contains historic adobes, museums, and interpretive markers that explain the Spanish, Mexican, and early American periods tied to the mission's history. It is a focal point for documented mission-era events and daily life in early San Diego.