Freiburg, Germany. Another beautiful city (no shortage of these in Germany!). If you go, take the time to make the hike up into the forest/hills. There's a great tower you can climb, and get an amazing view of the city and surrounding area!
The Holstentor is one of the two remaining city gates of the city of Lübeck. Built in 1464, the gate now serves as a museum. Because of its two captivating round towers and arched entrance it is regarded as a symbol of Lübeck. Together with the old city center (Altstadt) of Lübeck it is one of the top tourist attractions in Germany.