The Saints Peter and Paul Cathedral in Calbayog City... The Saints Peter and Paul Cathedral in Calbayog City, the first cathedral in Eastern Visayas, traces its roots to a church believed started around 1840, though foundations for the current structure were laid in 1903, with its consecration in 1912 making it the diocesan seat. Designated as the first cathedral in Eastern Visayas by Bishop Pablo Singzon in 1912, it's a significant cultural landmark, marked by the National Historical Commission