San Carlos Cathedral is located in Monterey, California and serves as the mother church of the Diocese of Monterey. It was originally built in 1770 and is one of the oldest cathedrals in California, showcasing a blend of Spanish colonial and Mission-style architecture. The cathedral is known for its beautiful interior, featuring ornate altars and stained glass windows. It has been a significant site for both religious services and community events, reflecting the rich history and cultural heritage of the region. Visitors often admire its historic charm and serene atmosphere.