San Diego de Alcala Cathedral is a historic Roman Catholic cathedral located in the heart of Gumaca, Quezon. Known for its centuries-old architecture and deep cultural significance, the cathedral serves as the seat of the Diocese of Gumaca and stands as one of the town’s most recognizable landmarks. Its façade reflects classic Spanish colonial design, while the peaceful interior features ornate religious details, stained glass windows, and a solemn atmosphere ideal for prayer and reflection. Surrounded by the town plaza and local heritage sites, the cathedral remains a central gathering place for religious celebrations, community events, and visitors exploring the rich history of Quezon Province.