The local train service runs from Sorrento to Naples, with stations near to the main sites or with a shuttle bus (to Vesuvius). It drops you right outside Pompeii entrance for example. It's cheap and regular.

www.sorrentoinfo.com/timetable/local_train_sorrento.htm

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Forget bungee jumping, crossing the road in Naples can seem like the scariest adventure sport of the lot. The best advice is to do what the locals do: don't try and get around the traffic, let the traffic get around you. Just hold your nerve and walk across the road - it sounds insane, but the drivers will (generally) see you and avoid you. It takes some bottle the first time, but you get used to it surprisingly quickly. Obviously use common sense, i.e. don't walk out in front of a speeding car - but Naples traffic seems to feature the horn more than the accelerator, the congestion being what it is. Just watch out for ten-year-olds on Vespas...

Everywhere

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The open top tourist buses run on three routes from Pazza Municipio. Naples is a very large city and this is a good way to get your bearings. I particularly recommend Line B, south-west along the bay, the quieter side of Naples, which provides great views of the bay and Vesuvius.

Piazza Municipio near Stazione Marittima

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