PDF-Pages 7 and 8 (title page)
Those two pages are the opening to the book, they help us to understand the book and its overall idea. Their objective is to catch the interest of the reader and keep them reading.
PDF-Pages 257 and 258 (240-241)
This spread is especially interesting in the way it concludes a main part of the book, it shows the structuring of the different parts. With the numerous illustrations and ornaments, it creates a visible boundary by changing the overall look of a page.
PDF-Pages 317 and 318 (300-301)
This section is the first and only section, that does not use the two column structure for a longer duration than just the title or subtitle, as it is used through the whole book.
Schenkel Nicolas, Vatican City