Hoan Kiem Ho sits at the center of Hanoi travel, a city lake where people walk and exercise around the water. Cafes, restaurants, and shops cluster nearby, and lights come on at night to form a night view. On weekend nights, crowds of locals and outdoor stage parties gather, and on January 1 you can watch a countdown and fireworks. On the steps in front of the lake, food smells and a fishy odor are strong.