Pope Francis waves from a car after his arrival in Seongnam, South Korea, Thursday, Aug. 14, 2014. Pope Francis called Thursday for renewed efforts to forge peace on the war-divided Korean Peninsula and for both sides to avoid "fruitless" criticisms and shows of force, opening a five-day visit to South Korea with a message of reconciliation as Seoul's rival, North Korea, fired several projectiles into the sea. (Yonhap, Shin June-hee/AP) #

A South Korean security guard peers out of a glass door during Pope Francis and South Korean President Park Geun-hye's meeting at the presidential house in Seoul, Thursday, Aug. 14, 2014. (Gregorio Borgia/AP) #

A sales assistant waits for customers next to TV sets broadcasting a report on Pope Francis' arrival, in Seoul August 14, 2014. Pope Francis arrived in the South Korean capital Seoul on Thursday after sending an unprecedented message of good will to China as he flew over the country that does not allow its Catholics to recognize his authority. (Kim Hong-Ji/Reuters) #

Pope Francis arrives for the Mass of Assumption of Mary at World Cup soccer stadium on August 15, 2014 in Daejeon, South Korea. Pope Francis is visiting South Korea from August 14 to August 18. (Jeon Heon-Kyun/Pool/Getty Images) #

Pope Francis poses for a selfie as he meets young people at the Major Seminar in Daejeon, on August 15, 2014. (Osservatore Romano/AFP/Getty Images) #

Pope Francis prays at birthplace of Saint Kim Taegon Andrea who was the first Korean-born Catholic priest and is the patron saint of Korea at the shrine of Solmoe on August 15, 2014 in Dangjin, South Korea. (Chung Sung-Jun/Getty Images) #

A picture made available by the South Korean 2014 Papal Visit Committee shows Pope Francis arriving in a papal vehicle to Gwanghwamun Square in Seoul, South Korea, August 16, 2014. Pope Francis celebrated the beatification of 124 Korean martyrs from the 18th and 19th centuries in the biggest event of his five-day trip to South Korea. (Handout/EPA) #

Children pose with a poster of Pope Francis entitled "Hello, Pope Francis!" during a photo exhibition at the Sejong Culture Center in Seoul, South Korea, Sunday, Aug. 17, 2014. (Ahn Young-joon/AP) #

Nuns greet Pope Francis as he arrives for a closing Holy Mass of the 6th Asian Youth Day in Haemi Castle in Haemi August 17, 2014. (Kim Hong-Ji/Reuters) #

Pope Francis waves to the faithful as he arrives for a closing Holy Mass of the 6th Asian Youth Day in Haemi Castle in Haemi August 17, 2014. (Kim Hong-Ji/Reuters) #

Pope Francis blesses a crying child who does not want to separate from his mother, at the closing Holy Mass of the 6th Asian Youth Day in Haemi Castle in Haemi, south of Seoul, South Korea, Sunday, Aug. 17, 2014. (Lee Jin-man,/Pool/AP) #

Young people use their smartphones to record the arrival of Pope Francis at the closing holy Mass for the 6th Asian Youth Day at in Haemi-myeon, South Korea, August 17, 2014. (Jeon Heon-Kyun/Pool/EPA) #

Bishops take photos before the arrival of Pope Francis for a meeting with Asian bishops at the Haemi Martyrs Shrine on August 17, 2014 in Haemi, South Korea. (Ed Jones/Pool/Getty Images) #

Pope Francis poses with leaders of South Korea's 12 leading religious orders at the Myeongdong Cathedral in downtown Seoul, South Korea, August 18, 2014. The Pope was due to end his five-day visit to South Korea with a special Mass for peace and reconciliation in the Korean peninsula. (Yonhap/EPA) #

Kang Mi Jin (R), a former North Korean citizen who escaped to South Korea four years ago, attends a mass for peace and reconciliation led by Pope Francis at the Myeong-dong Cathedral in Seoul, South Korea, August 18, 2014. (Daniel Dal Zennaro/EPA) #

Catholic worshippers gather ahead of a mass by Pope Francis at the Myeong-dong Cathedral on August 18, 2014 in Seoul, South Korea. (Wonsuk Choi/Getty Images) #

The faithful attend a Mass for peace and reconciliation outside Myeong-dong cathedral on August 18, 2014 in Seoul, South Korea. The pope, whose five-day trip to South Korea runs through today, was wrapping up his inaugural trip to Asia. (Chung Sung-Jun/Getty Images) #

A mass for peace and reconciliation outside Myeong-dong cathedral on August 18, 2014 in Seoul, South Korea. (Chung Sung-Jun/Getty Images) #

Catholic worshippers gather outside Myeongdong cathedral during a mass by Pope Francis in Seoul on August 18, 2014. (Ed Jones/AFP/Getty Images) #

The convoy makes its way past worshippers prior to a mass at Myeong-dong Cathedral on August 18, 2014 in Seoul, South Korea. (Wonsuk Choi/Getty Images) #

A butterfly pin, given to Pope Francis by a woman who was forced into sexual slavery by the Japanese military during World War II was pinned on him before mass on Monday, Aug. 18, 2014. In a poignant moment at the start of the Mass on Monday, Francis bent down and greeted seven women, many sitting in wheelchairs, who were forced into sexual slavery by the Japanese military during World War II. After receiving the pin - a symbol of the plight of these "comfort women" — he immediately pinned it to his vestments and wore it throughout the Mass. (Daniel Dal Zennaro,Pool/AP) #

conference on his journey back to Rome from Seoul, South Korea, Monday, Aug. 18, 2014. Pope Francis wrapped up his first trip to Asia on Monday by challenging Koreans - from the North and the South - to reject the "mindset of suspicion and confrontation" that cloud their relations and instead find new ways to forge peace on the war-divided peninsula. (Gregorio Borgia/AP) #