St. Mary's Cathedral in San Francisco is a prominent Roman Catholic church known for its striking modern architecture. Completed in 1971, it features a unique design with a large, triangular roof and stunning stained glass windows. The cathedral serves as the mother church of the Archdiocese of San Francisco. The interior of St. Mary's Cathedral is spacious and inviting, with seating for over 1,000 people. It hosts various religious services, community events, and concerts throughout the year. The cathedral is also a popular tourist destination, attracting visitors who admire its architectural beauty and serene atmosphere.