If you want to know the answer, click the "It is ..." button next to the image. A picture will appear to the right that shows the object in its larger context, along with brief explanatory text. Then click the "Try another picture" button to see the next picture in the set. For extra credit, identify where the picture was taken.
Note that each pair of images is two separate photos; the first is not just a cropping of the second. It was just a fortunate coincidence that we took a suitable in-context picture for each "what is it?" photo.