The image shows a close-up of a concrete structure with a blue sky in the background. The structure appears to be a part of a larger structure, possibly a building or a structure, with a curved roof. The roof is made of concrete and has a small window on the left side. On the right side of the image, there is a white sign with the number "100" written on it. The sky is clear and blue, and there are no clouds visible. The image is taken from below, looking up at the structure.