Denis summarizes his summer vacation in Italy. He visited several cities including Parma, Verona, and Lake Como. In Verona, he saw the Arena amphitheater and House of Juliet. At Lake Como, he visited the famous Villa Carlotta. He also stopped at Lake Maggiore and toured its three islands, each with its own attractions like shops, flowers, and a castle. Overall, Denis had an enjoyable trip and wants to return to Italy to explore more places.