This small square is the heart of London and a must-see tourist attraction. The most striking thing in the square is a tall Nelson Memorial Column, a taller stone-pillar sculpture. The column is 53 meters high. Under the pillar are huge square stone pedestals and multi-storey steps. On the steps below the memorial pillar are four huge bronze statues of lion sleeping. It is rare to see such a perfect combination of height and width of the sculpture building structure. General Nelson's Memorial Column was built in 1840 to commemorate the victory of the British Navy in the Spanish port of Trafalgar in the early 19th century. It is said that the metal part of the sculpture was made from bronze cannons captured from Napoleon's army. There are four sculpture bases in the four corners of the square and two in front of the National Gallery of Art. Five of them are bronze statues of figures, of course, famous historians or monarchs. One of them is the President of the United States who has vowed never to return to Washington, the United Kingdom. In the northwest corner of the square, there is a modern sculpture of a horse on the base. The sculpture on the base is often replaced and belongs to temporary exhibition. In this square, the old and the modern get along with each other day and night, and the history and reality are interconnected and interlinked. Some children lined up to take pictures on the steps of General Nelson's Memorial pillar, while the square was crowded with tourists, and more tourists were sitting on the steps and corners of the square. The square in central London is surrounded by red double-decker buses and busy highways, making it very noisy and lively. In front of the National Gallery of Art at the end of the square, there are many artists performing various kinds of performance art, which is more noisy and lively in the crowd of tourists. We walked through two water fountains symmetrically located in the square and went up to watch a performance by street artists. There are common modeling performances, but also rare ground painting performances, of course, there is no lack of street performances by instrumental artists.