The ephemeral art of festival, popular in the 16th and 17th centuries, was created for public events, such as triumphal processions, weddings and court funerals. Large-scale monuments combining painting, sculpture and the performing arts were devised for the duration of the event, but as soon as this was over, these extravagant constructions were dismantled and their individual components ultimately destroyed. Before the monuments ceased to exist, the city council would ensure their conservation in words and images, thus materializing the ephemeral art of festival into the more lasting medium of word and image on paper. One of the most celebrated such festive events was that of the 1599 Antwerp Triumphal Entry of Archduke Albert of Austria and the Infanta Isabella Clara Eugenia of Spain, the new Spanish governors of the Netherlands. No fewer than 22 monuments, composed of ephemeral materials, were devised. Construction of the monuments was entrusted not only into the hands of sculptors, painters, goldsmiths, carpenters and architects, but also to one of the leading thinkers of the time, the humanist and city secretary Johannes Bochius. This study offers a new approach to an analysis ofthe art of such events, based on Bochius' book: The Triumphal Entry of the Archdukes Albert and Isabella. Offering a unique and innovative interpretation of the ephemeral art books, a particular relation is revealed between the ephemeral event itself and its documentation in a book. Examiningthe role of the author (in this case Bochius) as the sole designer of the event, the monuments and their documentation (the book), requires an idiosyncratic reading of the text, which in turns provides more accurate and validinterpretative framework for the book, and hence also for the artwork. Such books, in uniting event and text into one coherent and long-lasting work of art, constitute a new genre of ekphrasis, formulated and conceived solely for the purpose of eternalizing the ephemeral.