Capri is an island in the Gulf of Naples, easily accessible by ferry from multiple Campania locations including the city of Naples. As many as 5,000 people a day make day trips to Capri from the mainland during the popular summer months. That's a lot of bodies on an island that's less than four miles long and less than two miles wide, and it's something to keep in mind if your schedule allows you the option of visiting during the shoulder seasons in spring or autumn.
All the ferries arrive at Marina Grande, where you can connect to buses and cable cars that will take you to Capri town. But there is also worthwhile sightseeing in the sea itself, at the legendary Blue Grotto.
The Blue Grotto
Known locally as Grotta Azzura, the Blue Grotto once was used by the emperor Tiberius as a private swimming pool. Today, the sea cave is a must-see destination for swimmers from all over the world who want to enjoy the way sunbeams pass through an underwater space and fill the cave with rich, blue reflections.
You can only swim inside before 9
Local rowboats are often the transportation of choice for visiting the Blue Grotto at Capri. Don't be surprised to pay good money for a two-seat variety that looks like it would be more at home in a backyard swimming pool. Also, it is common for the tour guides to ask you to lie down in the boat's bottom so that you don't whack your head as the boat moves into the cave.
If you would prefer to do your exploring on terra firma, then consider a long walk or short taxi ride to Villa Jovis, which is east of Capri town. The emperor Tiberius is said to have built this Roman palace sometime between A.D. 27 and 37, when it spanned nearly two acres.
It is believed that Tiberius chose the location because it was difficult to reach, and thus a safe haven from potential assassins. Bring plenty of bottled water to stay hydrated if you choose to walk from town and back.