I am starting off in Dublin then.
Saint Patrick's Cathedral in Dublin, also known as The National Cathedral and Collegiate Church of Saint Patrick, Dublin or in the Irish language as Árd Eaglais Naomh Pádraig, founded in 1191, is the larger of Dublin's two Church of Ireland cathedrals, and the largest church in Ireland with a 140 foot (43 meters) spire.
Unusually it is not today the seat of a Bishop, as Dublin's Church of Ireland ArchBishop has his seat in Christ Church Cathedral, with Saint Patrick's being (since 1870) the National Cathedral for the whole island, drawing chapter members from each of the twelve dioceses of the Church of Ireland. Saint Patrick's is headed by a Dean, an office which has existed since 1219, the most famous holder being Jonathan Swift.
There is almost no precedent for a two-Cathedral City,[10] and some believe it was intended that St Patrick's, a secular (diocesan clergy who are not members of a religious order, i.e. under a rule and, therefore, 'regular') cathedral, would replace Christ Church, a cathedral managed by an order.
I am starting in dublin and I hope that...