The book of Kells is gorgeous and well worth a visit.
If you are in Dublin and enjoy this sort of thing, _please_ also take the very short walk over to the Chester Beatty Library (https://chesterbeatty.ie/) as well. It's free and has an absolutely fantastic collection of ancient and sacred manuscripts. I was lucky enough to live across the street from it for several years and it remains one of my favourite museums in the world.
If you are in Dublin and enjoy this sort of thing, _please_ also take the very short walk over to the Chester Beatty Library (https://chesterbeatty.ie/) as well. It's free and has an absolutely fantastic collection of ancient and sacred manuscripts. I was lucky enough to live across the street from it for several years and it remains one of my favourite museums in the world.