Hamburg is the second-biggest city in Germany and a second-largest port in Europe. The port itself if a major tourist attraction, with its numerous canals, bridges and buildings from the past eras, as well as the naval museum Museumshafen Oevelgönne.
Hafengeburtstag is a funfair to honor the birthday of the port of Hamburg with a party and a ship parade. Take a walk in the Planten un Blomen Park with its different fascinating sections and cross the Elbe in an old tunnel underneath.
Travemünde, on the shores of the Trave river near the Baltic Sea, is an important ferry port and sea resort. Its lighthouse is the oldest in Germany, and its port organises the yearly Travemünder Woche sailing contests and the Sand World sand sculpting festival. Take a walk around this relaxed town, have a nice meal, and spend some time on the beach if it's a nice day. If you're up for a hike, you'll find the Palinger Heide close by. The nearby town of Lübeck is also well worth a visit.