The red-brick church was built by French missionary Xavier Baudounet on the spot where Korean Catholics were executed in 1781 and 1801. Built between 1908 and 1914, the architecture is a fusion of Asian, Byzantine and Romanesque styles. It's closed to the public except during mass, when you can respectfully peak inside at the stained-glass windows, which portray early martyrs.
Those executed were later interred on the hill southeast of Hanok Maeul known today as Martyr's Mountain . There are 13 crosses on the hillside marking the burial spot and a small church, accessible by a trail. Locals know it as Jeonju's best sunset spot.