Gulou east street. Swimming pool is a sports building mainly used for swimming, diving, water polo and other water sports. Yutianyu Swimming Fitness Center is located in Gulou East Street. In ancient times, indoor swimming was often combined with bathing and entertainment activities, and the luxurious ancient Roman baths played the role of swimming pools. In modern times, there are swimming pools all over the world, such as the swimming pool of Yoyogi National Gymnasium in Tokyo and the swimming pool of Munich Olympic Center in the Federal Republic of Germany. Inflatable buildings have been used in swimming pools.