Hanoi is called a lake city, so there are more than 300 large and small lakes. Hoan Kiem Lake is one of the representative lakes in the center of Hanoi. When traveling to Hanoi, walking around the lake naturally occurs, whether intentionally or not. In the afternoon when we arrived, there were many people sitting around the lake in order to avoid the hot daylight, and many people came out for a walk in search of the cool breeze. We wanted to take a walk, but the sweat poured even after walking for 5 minutes was a little delayed. There is also a shrine next to the lake, which is said to be a shrine that raises Vietnamese heroes who won the war.