Set along the Tyrrhenian Sea with views of Mt. Vesuvius to the east and the sparkling Bay of Naples hugging its shoreline, Naples is a busy, often frenetic city that serves as the main gateway to southern Italy and some of the country's most beautiful beach destinations. Nearby is Pompeii, the largest archaeological site in Europe; the ancient lava-trapped city can be visited on a day tour, as can Herculaneum, another town fossilized by Mt. Vesuvius. The treasures of Pompeii (including a one-million-piece floor mosaic) and other rare antiquities can be viewed at the National Archaeological Museum, easily visited on guided tour. The colorful seaside resorts of the Amalfi Coast—including Positano, Amalfi, and Ravello—are two to four hours away by train or bus; while the lovely islands of Sorrento and glamorous Capri are just quick 45-minute boat trips across the Gulf from central Naples. Take a trip to the island of Capri to see the glowing light of the Blue Grotto on a private boat tour. In Naples itself, spend an afternoon tasting pizza made in the city where it originated, visit historic castles, tour the underground ruins of the ancient Greek and Roman settlements, and revel in year-round Christmas with Naples' well-known nativity-scene shops.