.The Trinity College Library, located at Trinity College, Dublin, is the largest library in Ireland. As a "copyright library", it has legal deposit rights for material published in the Republic of Ireland; it is also the only Irish library to hold such rights for the United Kingdom.
The library is also the permanent home to the famous Book of Kells. Two of the four volumes are on public display, one opened to a major decorated page and the other to a typical page of text. The volumes and pages shown are regularly changed.
More informaiton on the Wikipedia page 
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