World Book Day, celebrated on 23 April by UNESCO, marks the anniversaries of the deaths of William Shakespeare and the author Miguel de Cervantes. First observed in 1995, the date has been marked as a celebration of books and the cultural wealth reading provides. In celebration of the day, here are some of the most beautiful libraries in the world, both modern and ancient, from a tiny library covered in firewood to an all-white building inspired by the Pantheon of ancient Rome.

Admont Library
Admont Library, in Admost Monastery in Austria, is the largest monastery library in the world (Jorge Royan)
Trinity College Dublin Library
The founding of Trinity College Library, Dublin, began with the establishment of Trinity College in 1592 (Getty)
Public Library of Stockholm
The round Stockholm Public Library was designed by Swedish architect Gunnar Asplund (Getty)
Radcliffe Camera
The Radcliffe Camera at Oxford University was built between in 1737 and 1749 to house the Radcliffe Science Library (Getty)
Stuttgart City Library
The only colour in the cube-shaped Stuttgart City Library, Germany, comes from the books themselves (Getty)
Liyuan Library
Liyuan Library at Jiaojiehe village of Huairou district, Beijing (Reuters)
Alexandria Library
Alexandria Library, Egypt. The original library of Alexandria was established in the third century BC (Getty)
New York Public Library
New York Public Library, New York City, was developed in the 19th century (Getty)
Malatestiana Library
The structure and fittings of the Malatestiana Library in Cesena, Italy, have been preserved for more than 550 years (Sailko)
Sainte-Geneviève library
Sainte-Geneviève Library in Paris inherited the collection of the Abbey of St Genevieve (Marie-Lan Nguyen)