Dublin Castle

Dublin Castle served as the seat of British administration in Ireland for roughly 700 years, from the early 13th century until the handover to the Irish Free State in 1922, and today the complex is used for state functions including presidential inaugurations. The State Apartments, once the residence of the Viceroy, feature ornate reception rooms including St. Patrick's Hall, used for state ceremonies, and can be visited independently or with a guided tour that adds detail on the castle's political history. Beneath the courtyard, the medieval undercroft preserves excavated sections of the original Viking-era defensive walls and a section of the River Poddle that once fed the castle moat. On the same grounds, the Chester Beatty Library holds an internationally significant collection of manuscripts, prints, and decorative arts from Islamic, Asian, and Western traditions, and is free to enter. A visit to the castle itself takes 1.5 to 2 hours; adding the Chester Beatty extends that further and is well worth the extra time given its free admission. The State Apartments occasionally close without notice for official state functions, so visitors with a specific interest in that section should check ahead. The castle gardens, a peaceful green space beside the complex, are a good spot to pause between the two museums.