Europe - Greek Isles - Venice

Though there's something for everyone in Ravenna -- located in Italy's Emilia-Romagna region -- it's a treasure trove for art and history lovers with its historic buildings decorated with Byzantine mosaics, museums highlighting a variety of topics and historic churches, cathedrals and basilicas. And, of course, Dante's tomb is located here and draws lots of visitors. Ravenna is also a popular destination for outdoor enthusiasts including hikers and divers. --By Shayne Thompson, Cruise Critic contributor

Dubrovnik is a great walking city for lovers of culture and history, with centuries-old monasteries, churches, synagogues and even one of the oldest operating pharmacies in Europe. But, if you're looking for a day of relaxation between busy tours in marquee cities, it's also a gorgeous spot to simply sit and watch the world go by amid red-roofed stone buildings and the sparkling, aqua Adriatic Sea.

The medieval-era Old Town is a walled city, and from above -- you can walk the 1.3-mile stretch some 80 feet above ground level for spectacular views -- it is reminiscent of Venice, just on a smaller scale (and with marble alleyways instead of canals). Like the Italian city, which lies just to the northwest, Old Town Dubrovnik is free of vehicular traffic and dotted with Renaissance churches and fountains, with a rich history as a trading port. In lieu of canals, you'll find narrow, cobblestone streets where pedestrians stroll from shop to shop, dine and drink at alfresco cafes and soak up the sun.

Dubrovnik is nestled in the southwestern corner of Croatia, a boomerang-shaped country directly across the Adriatic Sea from Italy's east coast, under which lies Bosnia and Herzegovina. The atmosphere is light and welcoming, due in no small part to the city's gorgeous setting on the Dalmatian Coast, which can be appreciated on one of the many boat tours offered from the Old Town harbour. Nearby beaches are also accessible; tours further inland include country bike rides and wine-tasting.

The port is a mainstay on Eastern Mediterranean cruise itineraries, sprinkled among greatest-hits stops like Athens, Venice and so many Greek Isles. Most Eastern Mediterranean cruises set sail from spring through fall, though winter cruising is gaining popularity.

You'll be rewarded if you set your alarm for an early start when arriving in Kotor. Part of the fun is entering the Bay of Kotor and gliding for an hour through the mountains on a 17-mile waterway known as Europe's southernmost fjord. It's not actually a fjord -- fjords are caused by glacial activity, and the Bay of Kotor has been carved by a river running from the interior to the Adriatic Sea. Still, the views are fjord-like, with mountains rising on both sides of a long, thin bay that leads to the old walled town of Kotor. Cruise ships often begin the bay journey as early as 6:15 a.m. for an 8 a.m. arrival. Its fortified entrance to the sea made the Old City of Kotor an ancient trade center. Now it's a UNESCO World Heritage Site and Montenegro's most famous town. The Old City is a well-preserved collection of buildings, churches, squares and stone streets that date to the Middle Ages. The car-free, walled town is just across the street from the city's cruise ship dock. Kotor is full of shops and little restaurants. Pick a square, order a coffee and gaze at churches from the 12th to 15th centuries. Looking for more great views? Put on your walking shoes for a hike. The city walls climb the mountain behind the town, and it's about 90 minutes up to the fortress at the crown (at 853 feet) and back. If your ship is in port for just a few hours, you may want to concentrate only on exploring the Old City. If you have all day, consider excursions into the mountains for sightseeing and stops at seaside resorts on the Adriatic.

Dream up a wish list of everything you'd want from a Greek holiday: talcum-soft beaches, spectacular subtropical forests, tasty cuisine and a beautiful, historic Old Town to explore. Add wall-to-wall sunshine, and you'll find Corfu ticks pretty much every box.

This small Ionian island (only 40 miles long and 20 wide) is a highlight of many Mediterranean cruise itineraries, and it's not hard to see why. Corfu (known to the local Corfiots as Kerkyra) is one of Greece's most verdant and picturesque islands.

Its lush interior, well-watered by winter rains and smothered in fragrant pine forests and dense olive groves, is studded with charmingly old-fashioned rural villages, where the sleepy routine is occasionally enlivened by summer religious festivals (panegyria).

At such times, tempting food and craft stalls appear, a fairground atmosphere prevails and brass bands, known locally (and rather confusingly) as philharmonic orchestras, toot out foot-tapping tunes. The main festivals take place in July and August and, of course, over Easter. And if religion's not your thing, perhaps the two Corfu beer festivals, in July and October, will grab your attention.

Most time-strapped cruise visitors confine their visits to exploring Corfu Town on the island's east coast, and this delightful medieval enclave, now a UNESCO World Heritage Site, certainly deserves the attention. You'll find historic fortresses and the vast Spianada Square (esplanade), which is the largest public square in the Balkans, as well as intriguing alleyways and spectacular statues and fountains (not to mention excellent shops and lively restaurants).

If your cruise schedule allows, or you've visited Corfu Town before, you'll find it very rewarding to venture farther afield. In its long history, Corfu has "belonged" to many invaders -- Byzantines, Venetians, France, Russia and Britain -- before returning to Greek rule in 1864, and all have left their cultural stamp. You'll see it in the esplanade's cricket pitch and the island's Byzantine churches, Italianate mansions and the elegant French Liston arcade.

It all blends into the fascinating jumble, which makes Corfu one of the best-known and best-loved islands of the Ionian archipelago.

The seaside Greek town of Katakolon, with a population around 600, is your typical small-town cruise port -- fishing boats bob in the harbor; cafes lace the waterfront; shops sell T-shirts, hats and jewelry; and a small beach draws swimmers and splashers. But that's not why ships make this town a destination. They arrive because Katakolon serves as the cruise gateway to Ancient Olympia, the birthplace of the Olympic Games. Drive 40 minutes from Katakolon and you are transported back thousands of years. Stroll the UNESCO World Heritage Site of Ancient Olympia, and you walk in the footsteps of early Greek and Roman athletes -- wrestlers, chariot drivers, discus throwers, runners and long-jumpers -- who vied for glory and the gods' favor. Stand alongside the massive columns, and, with the tales of a good guide, you can envision the once-magnificent temples, athletes training in the palestra and runners readying on the track. Alexander the Great, Nero, Plato and Aristotle are among those who watched the games from where you stand. Tourists flock to the site and its companion museums, including the Archaeological Museum of Olympia, a treasure trove of pieced-together sculptures and statues that once adorned the ancient structures, and the Museum of the History of the Ancient Olympic Games, where you can learn about the original competitions. If you've already visited Ancient Olympia, there are other sights in the area, including the spectacular temple of Apollo Epicurius and the medieval Chlemoutsi (Hlemoutsi) fortress -- or seek out the golden-sand beaches that ring the Gulf of Kyparissia. Note: We recommend that you use Google Maps to locate the destinations in this guide by entering the name of an attraction or business, rather than the address, which often stumps Google Maps. You should also confirm the hours, which are changeable, based on the season and day you will visit. In some cases, the fact that there's a ship in port will also affect opening times.

In the early 1960s, shipping magnate Aristotle Onassis "discovered" the Greek island of Mykonos and brought Jackie Kennedy there -- and soon, the island became an exclusive playground for celebrities like Grace Kelly, Brigitte Bardot and members of the Versace family. Today, it's more democratic, a noisy, bustling, bursting-at-the-seams place with something for everyone, from singles to gay couples to families. You'll find quiet stretches of sand, party beaches, waterfront cafes, shopping in every price range (both international brands and local crafts), water sports and delicious food (especially fresh fish). Scores of people, looking to experience the internationally renowned gold-tinged beaches and sweaty, pulsating nightlife, descend upon the tiny island during the packed high season, which lasts from the Greek Orthodox Easter celebration (usually in April or early May) through September. After the cruise season, Mykonos gets quieter, but it does not shut down. Restaurants in the principal tourist areas -- the beaches and waterfront -- are generally open from March until November. Spots where locals eat or where business is good year-round remain open. The largest town on the island is Mykonos town, also known as Chora or Hora; a few miles inland is the village of Ano Mera. The subject of many paintings by local artists, Mykonos is a feast for the eyes, with its azure waters, houses painted white with brightly colored shutters, bougainvillea trees in bloom, iconic windmills and colorful fishing boats. Visitors love to explore the shops, restaurants, cafes and churches on the narrow streets off the harbor.

Spectacular Santorini -- scene of one of the world's most violent volcanic eruptions around 1450 B.C. -- is inarguably the most scenically dramatic of all the Greek Islands. Officially the island is Thira, yet the Latin name of Santorini persists. With its pitch-black beaches, rugged landscape and stunning caldera (volcanic crater), it's more akin to one of the Canary Islands than the Cyclades, though its whitewashed churches and clifftop houses score highly in the charm stakes.

This is the island for lovers of natural beauty, though sun seekers may not fancy its beaches. Best views are from the cliffs bordering the caldera, which was formed when the center of the island basically collapsed into itself. Geologists marvel at the cliffs' multi-hued strata of rock, lava and pumice, so take your camera and be prepared to feel the earth move (perhaps even literally -- Santorini's most recent major earthquake was in 1956, although there was one nearby in 2009).

It's worth remembering that the bay surrounding Santorini is actually the world's largest volcanic crater, created 3,500 years ago by a massive eruption of the Thera volcano (which is still active). The bay is also believed by some to conceal the legendary lost city of Atlantis. There's plenty here to set your imagination working, even though the modern-day city of Thira, officially Fira, was completely rebuilt after an earthquake in 1956.

If you're happy to enjoy a browse around the shops and a lazy lunch with a view, Fira will fit the bill perfectly -- and it even has some 9th-century clifftop ruins to explore. But to see the best of Santorini, you should take a shore excursion, via bus or taxi, further afield.

Named after Athena, the goddess of wisdom, Athens is one of the oldest cities in the world -- built around its namesake deity's temple, the Parthenon, which still stands today. But Athens feels far from an ancient city. While it has done an excellent job at preserving sites like the Acropolis (where the Parthenon is located) and Greek Orthodox churches, it has evolved into a hip and modern metropolis and homeport for ships sailing the Greek Islands. The city's recently overhauled Metro system also provides a cheap, safe and easy way to get around for sightseeing if you have extra time before or after your cruise. Aside from major landmarks, even once-dingy neighbourhoods like Plaka and Thissio have been restored, boasting fresh pastel-coloured painted facades and chic restaurants, bars and shops. Syntagma Square -- Athens' central square -- also has been reborn as a tree-filled haven from which to take in the city's gorgeous neoclassical Parliament building and catch the changing of the guard at the Tomb of the Unknown Soldier. (Yes, that means you get to watch those men in frilly skirts, elaborate waistcoats and bobbled shoes do their high-kicking thing.) Athens, once (in some parts, still) one of the most frenetic and traffic-polluted cities in the world, now owns a real buzz and is well worth spending a few days in if your cruise starts or ends there.