Pope Francis has embarked on an ecumenical pilgrimage which is taking place today at the Ecumenical Centre in Geneva (Switzerland), on the occasion of the 70th anniversary of the foundation of the World Council of Churches (WCC). The theme of the celebration: “Walking, praying and working together”. The WCC is the largest and most inclusive body among the various ecumenical organizations. Founded in Amsterdam, in the Netherlands, in 1948, it currently comprises about 350 churches in 110 countries around the world and represents about 500 million Christians. Based in Geneva, it includes most of the Orthodox churches, numerous historical Protestant churches (Anglican, Baptist, Lutheran, Methodist, the Reformed Church) and several independent churches. The Catholic Church is not a member of WCC, but Catholic theologians work in important commissions as fully fledged members. Among the scheduled appointments include the common prayer and the afternoon meeting in the presence of the Reverend Olav Fykse Tveit and Mr Agnes Abuom, respectively Secretary General and Moderator of WCC. In conclusion there will be a significant greeting to the eight members of North Korea and South Korea.