Rajah Travel Corporation

Of course it is the longtime hub of the Port wine trade, but Porto is also much more. Take in the UNESCO-designated, 19th-century Stock Exchange Palace, seeing its famous Moorish Revival-style Arab Room, during your panoramic tour. Get a feel for this vibrant town, which is simultaneously profoundly urban and moodily romantic. Colorful multistory townhouses sheathe the hills that climb precipitously from the Douro estuary, medieval alleys snake through UNESCO-designated neighborhoods enclosed by 14th-century walls—which were erected on Roman foundations—and baroque church towers crown the hilltops. The river itself cuts through the city on its way to the ocean, marked by a series of iconic bridges along the way. It meets its final destination at Foz do Douro, a district whose name translates to "Mouth of the Douro." Our tour will take us all the way here, where you can admire the passeio alegre with its promenade inspired by French architecture, see the Castelo do Queijo that juts out over the Atlantic, and drive down Boavista Avenue.

Depart by coach for Mosteiro da Serra do Pilar, where we will begin our long walk around town. Cross the upper level of the Ponte Dom Luis, Porto's eye-catching bridge, and arrive at the Cathedral "Sé." From there, we'll walk to the São Bento Station to see its famous azulejos murals, which portray the city's rich history. After that, head up the hill to Santa Catarina Street, a bustling shopping street full of beautiful cafes, shops, and historical landmarks.

To fuel our jaunt around Porto, we'll stop at the Bolhão Market for a taste of an important local treat and one of the city's biggest industries: tinned fish. Known as conservas, specialty tinned fish are a cornerstone of Portugal’s culinary heritage, and gourmet versions are rapidly changing perceptions of tinned fish worldwide. Our guests enjoy an exclusive tasting experience designed just for our guests at the Bolhão Market, where the owners of a conservas shop will hand you a glass of Vinho Verde and walk you through a trio of high-quality sardines—a Portuguese favorite—canned with various flavorings.

Finally, we'll make our way to the Clérigos Quarter on the way back to the ship through Ribeira.

Ready for an expedition worthy of Indiana Jones? Today’s your chance. In the 1990s, scouting for a proposed dam project on the Côa River revealed an astonishing collection of prehistoric carvings, among them horses, deer and aurochs that span eons. The oldest images etched into the schist walls around the river date to approximately 22,000 to 20,000 BC, with younger carvings ranging from the Epipaleolithic, Neolithic and Bronze ages to the 17th century—images that represent human interaction with the natural world for more than 30,000 years. Learn about this amazing area and see the original rock art for yourself when you visit the Côa Valley with your knowledgeable guide. It will be an illuminating adventure. Note: Exploring these sites will require sturdy hiking footwear and considerable physical fitness: You’ll take a four-wheel drive down dirt roads and hike into rocky and hard-to-access locations.

Ride through wonderfully scenic countryside—the region is noted for its honey, which derives its flavor from the fields of wild lavender and the almond groves you’ll pass—to Castelo Rodrigo, the name of both a castle and the village it shelters. The castle ruins stand high atop Marofa Mountain, telling the tale of border strife and Portugal’s struggle for independence in a single structure. Construction on the citadel began in 1209 under the auspices of the king of Leon, but it became part of Portugal within a century—though its local lords sided with Spanish rulers from time to time over the next four centuries. That’s why the palace adjoining the castle lies in ruins: Outraged citizens destroyed it after its lord sided with Castile. Take in the amazing view from the ancient stone walls, then step down through the tiny cobbled lanes of the village, passing the old pillory, the Manueline church, and the town’s market square. It’s not all history, of course. You’ll also get to sample delicious local treats, such as honey, almonds, olive oil and cheeses, and a newly restored tea-house invites you to relax over a cup of tea or a cool drink.

As you journey through the hills to a local quinta, a prestigious Port wine estate and the oldest in the Douro River Valley, you will see a unique landscape that has been shaped by wine growers for two millennia. The stone terraces curving around the steep slopes hold soil that is largely the creation of human intervention: People have laboriously broken up the native silver schist stone over the centuries and turned it into usable sandy earth; it’s called “anthroposoil.” The process of producing Port wine is a fascinating blend of tradition and modernity; the steepness of the slopes requires that grape vines be tended almost entirely by hand, but the wine itself is made using the most modern techniques. You’ll tour the estate to see its stainless steel and oak vats, Boutique Winery, and the historic wine presses, before proceeding to the terrace for a Port tasting with a view over the river.

Although many Port wine estates are owned by international corporations nowadays, the tradition of the family-owned estate remains strong. Start this expedition in pretty Pinhão, heading up into the hills to a family-owned quinta, where you can get a firsthand look at how the vineyards are tended and grapes harvested. Although some 80 varieties of grapes are approved for the creation of Port, six grape varieties dominate. Discover which ones are grown here and learn why.