Lively, easy to get around and brimming with stylish shops, Copenhagen makes an ideal opener to this marvelous exploration around the Baltic. Ahead lay the cobblestones of old Stockholm's Gamla Stan district and the bold, modernist lines of Finnish Helsinki. We'll explore the medieval turrets, spires and steeples of Hanseatic Tallinn after pausing for three memorable days amid the gilded palaces and domes of St Petersburg, showcasing art drawn from across the Old World. To finish, we add the romantic gables that crowd the ancient city of Polish Gdansk, close to Gdynia, and the pleasures of Berlin's outdoor terraces and parks - available on an excursion from Warnemunde.