Encyclopaedia Britannica, 11th Edition, Justinian II to Kells, Volume 15, Part 6 is an impressive source of knowledge that covers a wide range of topics from history and geography to science and art. This publication, created by a collective of authors, carefully examines the events and personalities that have defined world history and culture. In the "Justinian II" section, readers will be able to learn about the reign of the prominent emperor of the Byzantine Empire, who left a noticeable mark in history. At the same time, the chapter "Kells" reveals the mysterious world of an ancient Irish monastery, where the outstanding "Book of Kells" - one of the most outstanding examples of Celtic art - was created. Edited by various authors, this encyclopedia impresses with its volume and depth of knowledge contained within its pages. Thanks to this work, readers will have the opportunity to deepen their knowledge on a wide variety of issues and expand their worldview.