Pope Francis has become the first pontiff to visit an Anglican church in Rome. Francis and an Anglican bishop prayed side-by-side Sunday afternoon at All Saints Church in central Rome.
Source: Catholic Herald - "Francis Becomes First Pope To Visit Rome's Anglican Church", 26 Feb 2017, http://www.catholicherald.co.uk/news/2017/02/26/francis-becomes-first-pope-to-visit-romes-anglican-church/