Just outside Dongbianmen, near Jianguomen. As part of the ancient city wall of Ming Dynasty, if you want to come to the capital area, you will come here. Now it is the city center. The traffic is very convenient. Many buses go directly. The park is free, but the corner building can only be seen from a distance, not up. The corner building itself is well preserved and repaired. It is antique and magnificent. In early spring, there will be a Plum Blossom Festival. The plum blossoms in various forms complement each other with the ancient city walls and corner towers. This is the best time to appreciate the corner towers. Therefore, it will attract many tourists and photographers.