Hoan Kiem Lake is in the very heart of Hanoi. The lake is clean, and the surroundings are lovely. Visitors may go on a cruise around Hoan Kiem Lake and view the surroundings. Hoan Kiem Lake is of high national significance, as it houses the Ngoc Son Temple, which is regarded as a pilgrimage site for Vietnamese Buddhists, with awe-inspiring statues and murals within.