Concierge.com's insider take:
Though it's not strictly one of the Cinque Terre villages, it would be a shame to miss out on a visit to historic Portovenere. The town lies just around the headland of San Pietro, which separates the Cinque Terre from the Gulf of La Spezia, and is best approached by sea, on one of the regular ferries that ply the coast. The houses that front the quay look as if they've been squeezed together by an angry giant: Each is one room wide but five or six stories tall, and they're all painted different pastel shades. On the hill above town is a 12th-century Genoese castle (the town was the Genoa Republic's southern bulwark against its rival Pisa), while to the south, on the rocky headland, stands the ancient church of San Pietro, a 12th-century Gothic structure in stripes of black and white marble erected on the remains of a sixth-century Paleochristian chapel. Via Cappellini, Portovenere's main street, heads uphill from the town gate; if lunch is on the agenda, the Antica Osteria del Caruggio at number 66 is a good traditional trattoria where you can sample local dishes like mesciua, a chickpea and pearl barley soup (39-01-8779-0617). Small ferries cross the narrow channel between the port and the island of Palmaria, where you'll find a more up-market lunch stop, Locanda Lorena (39-08-779-2370). Another much smaller island, Tino, belongs to the Italian military and is open to the public only on September 13, the feast day of one of its early inhabitants, seventh-century hermit San Venerio.