Trinity's greatest treasures are found within the Old Library, built by Thomas Burgh between 1712 and 1732.
The star of the show is the Book of Kells, a breathtaking, illuminated manuscript of the four Gospels of the New Testament, created around AD 800 by monks on the Scottish island of Iona, but more stunning still is the 65m Long Room, the library's main chamber, which houses around 200,000 of the library's oldest volumes.