caption: The image shows a black and white photo of a city with mountains in the background. In the foreground, there are buildings, trees, and plants, and the sky is visible at the top of the image. On the left side of the picture, there is a watermark, and on the right side, there appears to be a collage of two pictures. This image is of the city of Catalonia, Spain, and is part of a series of stereoscopic views.