Dublin Castle Ireland (1800–1922). After the signing of the Anglo-Irish Treaty in December 1921, the complex was ceremonially handed over to the newly formed Provisional Government led by Michael Collins. It now hosts the inauguration of each President of Ireland, and various State receptions. The castle was built by the dark pool ("Dubh Linn") which gave Dublin its name. This pool lies on the lower course of the River Poddle before its confluence with the River Liffey; when the castle was built, the Liffey was much wider, and the castle was effectively defended by both rivers. The Poddle today runs under the
St Catherine's Church, Dublin (Church of Ireland) St Catherine's Church, Dublin (Church of Ireland) St. Catherine's Church, on Thomas Street, in Dublin, Ireland, was originally built in 1185. It is located on what was once termed the ""Slí Mhór"" (Irish: Great Way) - a key route that ran westwards across Ireland from Dublin. The church was rebuilt in its present form in the 18th century by John Smyth (or Smith). The church closed in 1966 due to a decrease in the size of the local congregation. The church was de-consecrated the following year, and for a period was used by Dublin Corporation for exhibitions and concerts. After