Pope Leo was set to visit Barcelona's Sagrada Familia on Wednesday to inaugurate the newest of its soaring geometric spires ​that makes ‌the modernist marvel designed by Antoni Gaudi the world's tallest church. Leo, after celebrating Mass ⁠inside the vast church, will walk outside to bless the 172.5-metre Tower of Jesus Christ, crowned with a five-storey ceramic cross ‌visible across the Catalan capital. FRANCE 24's Sarah Morris reports from Barcelona.