Fusina (Venice) to Rome (Civitavecchia)

Ravenna, a historic port in Emilia-Romagna, is famed for its stunning Byzantine mosaics and rich cultural heritage, boasting eight UNESCO World Heritage sites. Must-do experiences include savoring local dishes like cappelletti and exploring the vibrant Mercato Coperto. The best season to visit is spring or early fall, when the weather is pleasant and the city is alive with local events.

Argostoli is the capital of Kefalonia, the largest Ionian Island, renowned for dramatic geological wonders, pristine beaches, and the literary fame of Captain Corelli's Mandolin. Must-dos include visiting the subterranean Melissani Lake, admiring the cliffs of Myrtos Beach, and tasting Robola wine with fresh-grilled fish. May through October offers warm weather and calm seas, with June and September providing the best balance of conditions.

Gythio is ancient Sparta's port town on the Laconian Gulf, where Homeric mythology, neoclassical waterfront charm, and the wild Mani Peninsula's tower houses and underground caves converge. Visit from April through October for Diros Cave boat tours, Cape Tenaro's mythological Underworld entrance, and waterfront dining in one of the Peloponnese's most atmospheric harbor towns.

The port that launched Athenian democracy's naval supremacy at the Battle of Salamis, Piraeus remains Greece's maritime heartbeat — and the most convenient gateway to both the Acropolis and the Aegean island chains. Dine on grilled sea bream at a Mikrolimano harbourside taverna, visit the extraordinary bronze Piraeus Apollo, and set sail for Hydra or Santorini by afternoon. Late April through June and September offer the Aegean at its most golden and uncrowded.

Mykonos is the Aegean at its most seductive — a labyrinth of bougainvillea-draped whitewashed alleys designed to disorient pirates (and occasionally visitors) leading to Kástro, the medieval hilltop quarter overlooking Little Venice, where balconied houses hang directly above the sea. The island's famous windmills, perched on a ridge above the old harbour, are best photographed at golden hour as pelicans patrol the waterfront below. Visit the sacred archaeological island of Delos — a 30-minute boat crossing — for one of the most significant ancient sites in the Greek world. May, June, and September offer the perfect balance of warmth, light, and bearable crowds.

Santorini, the ancient volcanic caldera rising from the Aegean, is Greece's most theatrical landscape — a crescentic island of sheer white cliffs plunging into an indigo sea, its clifftop villages of Fira and Oia draped in bougainvillea and culminating in the world's most photographed sunset. The island's unique Assyrtiko wine, grown on ancient ungrafted vines in volcanic pumice, is one of the Mediterranean's greatest expressions of terroir. Byzantine frescoes of extraordinary beauty fill the Prehistoric Museum of Thera. The volcanic black and red sand beaches of Perissa and Perivolos are unlike any others in Greece. April through June and September through October offer the finest conditions.

Palermo is the Mediterranean's most intoxicating crossroads of civilisations — Arab arches meet Byzantine gold mosaics beneath Norman royal chapels in the extraordinary Palatine Chapel, a monument to 12th-century multicultural brilliance that is Sicily's single greatest work of art. The Ballarò and Capo street markets, among southern Italy's most atmospheric, tumble through the ancient city in a sensory barrage of swordfish, blood oranges, jasmine, and street food improvised across centuries. Do not leave without tasting arancini and sfincione, Sicily's gloriously thick street pizza. Spring (April–May) and autumn (September–October) offer the ideal climate — warm enough for the sea, cool enough for extended walking.

Barcelona is the city where Roman history, Gothic grandeur, and Gaudí's delirious Modernisme collide in a Mediterranean coastal capital of astonishing energy and beauty. The Sagrada Família — still under construction after 140 years — continues its audacious ascent toward completion, while the Gothic Quarter's Roman-era foundations and the Passeig de Gràcia's extraordinary concentration of Modernisme masterpieces reward days of exploration. For a complete sensory experience, lose an afternoon in the covered labyrinth of La Boqueria market before descending to the waterfront for Catalan seafood at its finest. May through June and September through October offer the most pleasant weather; the city connects directly to Paris by overnight train.

Ajaccio, the vibrant capital of Corsica, enchants visitors with its rich history as Napoleon's birthplace and its stunning coastal views. Don't miss trying local delicacies like figatellu and brocciu, and explore the nearby picturesque villages. The best season to visit is during the mild spring or fall months, when the weather is pleasant and the crowds are fewer.

Cannes, transformed from a sleepy Provençal fishing village into the Riviera's most glamorous resort by an English lord's chance quarantine in 1834, and immortalized by the Film Festival since 1946, remains the French Riviera's most theatrical stage — where La Croisette's curved promenade of Art Deco palaces, private beach clubs, and Palme d'Or dreams meets the quiet authenticity of the Suquet hilltop quarter above the old port. For shopping, the Marché Forville bursts with Provençal produce, truffle vendors, and cut flowers each morning; for dining, the restaurants of the old port district offer bouillabaisse and socca that need no red-carpet backdrop. Visit in spring or September; Nice is twenty minutes by rail and Monaco thirty.

Villefranche-sur-Mer is a thirteenth-century duty-free port town on the French Riviera, where medieval stone passages and ochre-walled lanes cascade toward one of the Mediterranean's most spectacular natural harbours. Visitors should not miss Jean Cocteau's painted Chapelle Saint-Pierre and the covered Rue Obscure, followed by socca and Bellet rosé at the waterfront. The town is at its luminous best from late April through early October, when the bay glows cobalt and the evening light lingers long enough for an unhurried dinner along the Plage des Marinières.

Purpose-built as a Medici utopia in the late sixteenth century, Livorno was conceived from the outset as a city without discrimination — its founding Leggi Livornine granted equal rights to Jews, Christians, Muslims, and merchants of every nation, making it one of the most cosmopolitan cities in Renaissance Europe. Today, the Venetian-style canals of the Venezia Nuova quarter reflect colourful palazzi with a distinctly faded glamour, while the Mercato Centrale's fish counters display the cacciucco ingredients — a robust Livornese brodetto of five sea creatures — that make this port city a pilgrimage for serious eaters. Day trips to Pisa and Lucca are effortless from here. The season runs April through October.

Sardinia is a rugged, history-rich island in the western Mediterranean renowned for its luminous turquoise waters, bronze-age nuraghi towers, and a fiercely independent culinary tradition anchored by porceddu roast suckling pig and hand-pinched culurgiones pasta. Visitors should explore the Costa Smeralda's granite coves by boat and venture inland to taste Cannonau wines in centuries-old vineyards. The ideal season stretches from May through October, with late September offering warm seas, golden light, and blissful absence of peak-summer crowds.

Rome's ancient maritime gateway since the Emperor Trajan commissioned its harbour in 106 AD, Civitavecchia is the natural prologue to the Eternal City — just seventy minutes southeast by express rail. The port's Renaissance fortress, designed in part by Michelangelo, anchors a working waterfront that has welcomed travellers for millennia. Beyond Rome's unmissable monuments, consider an afternoon in the Civitavecchia thermal baths, drawing on mineral waters prized since antiquity. Spring and autumn offer the ideal balance of mild weather and manageable crowds for exploring the capital's layered history.