An ecological paradise of unbridled diversity, Costa Rica certainly lives up to its name, which means “rich coast.” The city of Puerto Limón has a few attractions, including the waterfront Parque Vargas and an interesting ethnohistory museum, but most visitors head to one of the many astounding national parks outside the city. A cruise through the canals of Tortuguero National Park offers the chance to observe endangered sea turtles, sloths, monkeys and even jaguars.

Progreso boasts the world's longest pier, which juts nearly five miles into the Gulf of Mexico and anchors to the oceanfront amidst a gorgeous beach with a promenade that itself stretches a mile. Standing sentry over it all is the 120-foot Faro de Progreso, an active lighthouse built in 1893. Progreso has a beach-town vibe, and the center is easily explored on foot. At the biological reserve of El Corchito, observe lush flora and fauna and take a dip in one of the Yucatán’s famous cenotes – collapsed caverns that created freshwater swimming holes.

The large island of Corsica rests enticingly between the French Riviera, Sardinia and Tuscany. This French playground has it all – hilltop villages, unspoiled beaches, rugged mountain scenery, dense forests, a dramatic coastline and thousands of years of history. Situated on the island’s western coast, Porto-Vecchio is Corsica’s St. Tropez, a city of luxury yachts, fashion shoots, nightclubs and some of Corsica’s most beautiful beaches. For an entirely different experience, travel inland to the mountainous region with its gorges, rivers and waterfalls.

This postcard-perfect destination, with its pastel-colored houses encircling the port, may be one of the most photographed in all of Italy. If you can take your eyes off the scenery, there is much to explore in and around Portofino. The 12th-century Church of St. George and the medieval Castello Brown both afford spectacular views of the harbor. A long, scenic hike or a short boat ride takes you to the restored 11th-century abbey in San Fruttuoso. Northwest of Portofino lies Genoa, filled with museums, palaces and the grand Cathedral of San Lorenzo.

Named for its round harbor, Porto Rotondo is a resort town on the Costa Smeralda. While a little quieter than Porto Cervo to the north, the town is no less beautiful and appealing. Some of the most idyllic beaches in this port are obscured by large boulders, so discovering them is an adventure in itself. The unassuming village behind the port has attractive outdoor cafés, restaurants and clubs situated on a pleasant town square. For a taste of rural Sardinia, visit the nearby town of San Pantaleo. Long a haven for artists and writers, it has a bohemian vibe and a gorgeous setting.

Established in 1633 as a fishing village, Portland grew to become not only the largest tonnage seaport in New England but also a charming destination of cobblestone streets, delectable seafood and history galore. The Old Port district is the center of it all with its restored brick warehouses bustling with shops, galleries, cafés, bars, and restaurants serving the freshest possible lobster. The Portland Museum of Art showcases works by Homer, Picasso, Matisse, Monet and more, while the views of the city from Portland Observatory are a work of art in their own right.