Multiple choice general knowledge WORLD'S BIGGEST ROMAN-CATHOLIC CATHEDRAL is in _________ PERGUAY IVORY-COAST CHILE FINLAND Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Basilica of Our Lady of Peace in Yamoussoukro, Ivory Coast, is the world's largest Roman Catholic cathedral by area. Though built in the 1980s-90s, it holds the record for size despite debates about its status as an active cathedral.