Introduction to Swan Lake: There is a natural lake area (Søerne) in the urban area of ​​Copenhagen, which is divided into five sections by five small bridges. Because there are many swans playing in the lake all year round, it is also named "Swan Lake". Swan Lake has a circumference of 6 kilometers and is a favorite leisure area for Copenhagen people. By the lake, in the sunshine, in the cool spring breeze, you will see couples hugging each other on the benches by the lake, Copenhagen people jogging along the lakeside, and people sharing brunch on the green grass. Two or three friends.