Marina

A full day along one of the world's most famous coastlines, with time in clifftop Positano, Amalfi and Sorrento and photo stops at the best viewpoints on the coast road.

Walk the streets, villas and forum of the Roman city buried by Vesuvius with an expert guide who brings everyday life in 79 AD to life. A great half-day option.

Learn to make real Neapolitan pizza, and gelato for dessert, in the city where pizza was born, then sit down to eat what you made. Two hours, so it fits any port day.

Head down the coast to hilltop Taormina for its ancient Greek theatre and Corso Umberto, then up to the village of Castelmola for sweeping views of Mount Etna.

Ride a 4x4 up Europe's most active volcano to walk among craters and old lava flows, then taste Etna wines over lunch high on the mountain.

Eat your way around Messina with a local guide: arancini, focaccia messinese, granita and other Sicilian street food classics, adding up to a full meal.

A small-group trip into the only tropical rainforest in the U.S. National Forest system to hike, swim in river pools and ride a natural rock waterslide.

Glide along San Juan's coast with an underwater jet scooter, looking for sea turtles on the reef. Videos of your swim are included, and it takes about 90 minutes.

See the colorful streets, forts and city walls of Old San Juan by golf cart, covering more ground than on foot, just steps from the cruise pier.

Hike through the jungle to climb, jump and slide down natural waterfalls, then refuel with a Dominican lunch.

Drive a dune buggy along muddy country trails and through local villages for a three-hour off-road ride from the cruise port.

Discover the Victorian town center, the San Felipe fortress, and local rum, cigars and chocolate on a relaxed half-day tour of Puerto Plata.