The exchange office was described very clearly, but there are many entrances to the Cathedral of Santa Maria del Fiore, and there are too many people queuing on site, so it is easy to be blocked. After entering, there was no one to lead, so I just followed the route by myself. When I reached a certain floor, I don’t know why I couldn’t go on, and I had to wait for it to open, but I could also take this opportunity to appreciate the Last Judgment. Overall, it was not as tiring as I imagined, and I felt very satisfied to be able to complete the tour.