The best way to view a work of art is, beyond doubt, to go and see it in person. A reproduction will never do it justice, especially in small format. Most libraries dotted around the country will have an art section with maybe a bookcase of art related books. If you would like to augment your gallery visits, of which Ireland has many world class, the Dublin City Council, Central Library in the Illac centre on Henry Street has an wonderful selection of large format art books. This is a section separate from the usual art bookshelf. It is located by the business centre. There are 2 alcoves full of large books on all of your favourite artists. Worth spending a coffee break browsing through.
Leonardo Da Vinci published by Taschen is a personal favourite.