Why not take a boat ride along the river when in Germany? 

Does not matter where you are in Germany, whether it is Berlin, Leipzig, Hamburg or Dresden. You can find a boat tour nearby with heaps of people on a summer day. 

For Dresdners: 

Luckily, we have the beautiful Elbe river that runs through the middle of the city. Giving you the best view on both sides. There are many cruise and steam boat tours that goes along the river with various stops along the way. One of which is the amazing Sächsische Schweiz. A hiker's dream location.