Most are free. National Museum of Ireland, Kildare Street. Hundreds of golden items bearing triskeles, knotwork, spirals. Cameras are not allowed, but the artifacts are splendidly rendered on post cards available in the museum shop. There is also a coffee-shop where you can buy bottled spring water from Co. Meath close to Tara.
Some days are free, on others there is a small charge.
Only a small part of the museum's collections are on display in the room. Not from pagan times, but pagan enough. Small entrance fee. Lir Clock, O'Connell Street. For years this ghastly mechanized art nouveau rendition of Irish myth was thankfully broken, but now some twerp has fixed it and at all hours it bongs out the silliest sing-alongs which assault the ears for blocks as princess and swans revolve high above the street.