The image shows a large wooden structure that appears to be in the process of being built. The structure is made up of multiple wooden beams and beams that are bent and twisted together to form a bridge-like structure. The beams are arranged in a way that creates a tunnel-like shape, with the top beam being the largest and the bottom beam being smaller. The roof of the structure is covered in a black metal sheet, and there are several cannons mounted on it. The walls of the building are made of brick and there is a black railing on the right side of the image. The sky is visible in the background, and the overall atmosphere is one of decay and neglect.