In the pages that I have chosen, what stands out are the drawings that the author introduces, which are rare throughout the book.
Between pages 76 and 77 we can find a section of the Basilica Ulpia, built in the 2nd century, a time when it housed much of the political life of Rome.
Between pages 92 and 93 there is a representation of the central point of this book, the Palladian basilica, a Renaissance building (obbiously designed by Andrea Palladio) located at the central Piazza dei Signori in Vicenza. The most notable feature of the building is the loggia, which shows one of the first examples of what have come to be known as the Palladian window.
Between pages 114 and 115 are the plans of the Alla Scala theater, which surprises me a lot since the book was published in 1767 and according to the information I have found online the theater was built in 1776 so either the information is wrong or the plans that appear in the book are prior to the construction of the building