More from David Derrick's The Toynbee convector, on one of my favorite reads: Goethe’s Italian Journey.
The book itself in translation: Italian Journey: 1786-1788 (Penguin Classics)
Online, it's available in German only:
Johann Wolfgang von Goethe at Britannica discusses the Italian Journey. (see Table of Contents)
J. H. W. Tischbein, Goethe in the Roman Campagna, 1787
Städelsches Kunstinstitut, Frankfurt am Main
More on the referenced Johann Joachim Winckelmann in the Toynbee piece. (Wikipedia, handle with care)