The northern lakes with the 104 square kilometer Mauersee are surrounded by dense mixed forests and fertile soil - no surprise therefore that the Prussian nobility has built its most beautiful mansions. Lötzen (Gizycko) is the capital of water sports due to its location and size. At the end of the 19th century the swing bridge was completed and to this day controls car and boat traffic. It is an attractive feature of the town. Near to the bridge is the waterfront; it has beautiful flowers and a free WiFi hotspot. There are a variety of small shops.
The centre for maritime is in the northern area next to Lötzen Steinort Marina. The harbor is protected, very well maintained and equipped with many maritime services. Steinort (Sztynort) is a good starting point for a trip through German history. At the port area of Steinort in the castle borders the family von Lehndorff (Heinrich Graf von Lehndorff was executed in 1944 for his involvement in the assassination attempt on Hitler). If you have time, leave your boat for a day and take a bike trip to Hitler's Lair where there is a good museum and memorial of the assassination.
Once you reach Angers Castle (Wegorzewo) you have reached the most northern point of your journey. It pays to drive past several marinas and to moor in the far corner of the waterway, directly in front of the castle in the old town harbor. From here you can also go to the open-air museum and sample Masurian country life from the last century.