Going to Naples? Get an Artecard by iNorv9
For those staying up to 3 days in the Campania region, the Artecard is an excellent bargain. For 25 euro you get free admission to two sites, half price off the rest, and unlimited use of all transportation (trains, busses, funicular). So if you only take the Alibus to and from the airport (6 euro), and take the train to visit Pompeii and Herculaneum (10 euro each admission, 3 euro r/t train ticket), you already will save 4 euro. There is a cheaper Artecard for just visiting Naples, but how can you just stay in Naples without seeing Pompeii and/or the Amalfi Coast?
Where to buy: For sale at the airport and train station, and many other locations around Naples.
Website: http://www.artecard.it/index.php?lingua=2