Second only to Berlin in size and population, the city of Hamburg is home to one of the biggest harbours in Europe. A stroll along its many waterways and canals illustrates why it has been called the "Venice of the North." Don't miss a trip to the local fish market (Fischmarkt), the Merchants District (marked by its imposing red-brick architecture), a fine dining experience along the river or a night out in the university quarter. And did we mention the Reeperbahn (red light district)? It's quite famous for its… red lights.

Sprawling along the edge of the Thermaic Gulf, Thessaloniki is a seaside showcase of Greek history from ancient Roman and Byzantine ruins to the modern high-rises lining its beaches. Plus, after sundown, Greece’s cultural capital hums with some of the best nightlife options in the Aegean.

Salou, on the Costa Dorada, nestles between quaint Cambrils and calm La Pineda. Just seven miles south of elegant Tarragona, the compact resort town is a family favourite, due in no small part to the existence of Port Aventura and Aquopolis theme parks. Gentle beaches and a slew of exciting fiestas in August add to Salou's appeal for families.