Ireland's largest library holds a 9th-century gospel and a 1732 masterpiece

History · Published 18 October 2026 Swipe more like this →

In short: The Library of Trinity College Dublin is more than a repository; it is a legal fortress of Irish culture. Housing over six million volumes, it holds the rights to every book published in Ireland and a 9th-century illuminated manuscript that has survived over a millennium of history.

Founded in 1592 by Queen Elizabeth I, Trinity College Dublin was established to align Ireland intellectually with Europe and strengthen the Protestant Reformation. While it was designed to mirror the universities of Oxford and Cambridge, it remains the only college of its kind to be established from the original plan. Holding the title of Ireland's biggest, this collection acts as a legal deposit site for a single printed version of each Irish publication, while also possessing exclusive permissions for UK-issued titles.

The library's architectural centerpiece is the Old Library, a masterpiece of the 18th century. Construction on this imposing building began in 1712 and was completed in 1732, taking twenty years to finish. Its most famous chamber, the Long Room, features a stunning barrel-vaulted ceiling and houses 200,000 of the college's oldest books. This space also protects the Book of Kells, an illuminated gospel book dating back to the 9th century, which was presented to the college by Henry Jones.

Beyond its vast printed collection, the library preserves significant Irish artifacts, including the Brian Boru harp—a national symbol of Ireland—and the 1916 Proclamation of the Irish Republic. The library's history is also marked by shifting social boundaries: it was restricted to Anglicans until 1793, began admitting Roman Catholics in 1873, and finally admitted women in 1904. Today, it remains a vital cultural landmark, balancing its role as a scholarly archive with its status as a major tourist destination.

The campus itself has evolved from an Augustinian monastery outside the city walls into the heart of Dublin. This geographical shift mirrors the college's intellectual journey, moving from a tool of religious and political authority to a liberal arts institution offering over 900 courses and 41 majors.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• Why Ireland’s oldest literature was written in the margins of illuminated manuscripts
• How a 19th-century Catholic university became Ireland's largest modern research powerhouse
• Why Ireland's oldest university and its only college are legally one and the same.
• The intricate artistry behind Ireland's most famous illuminated manuscript
• Oxford and Cambridge women sailed to Dublin to collect degrees their colleges withheld
• The Queen who viewed her crown as a heavy burden
• The evolution of Canadian policing from watchmen to a federal force
• The massive California airfield that became a giant pinhole camera
• The agricultural miracle that built a Colorado powerhouse
• The university that forced Mexico to think globally before it could think locally
• The complex legacy of a Missouri city and a scientific name
• The mosque that served as a medieval hospital and mental asylum

More in History · Latest · A–Z · All topics