You tend to run into interesting stuff in a busy library.
This is an example of high dynamic range photography. It's a technique for creating composite images to capture a wider range of exposure information than conventional photography. Being completely ignorant of the technicalities of taking photos, I had no idea why photographs never looked the way I saw the landscape.
I'd always thought wistfully that it was impossible to actually show the true washed-out white and blue beauty of the Wellington Harbour as seen from Mount Victoria on a clear winter morning. Now I know that one reason why I haven't seen this done is because our eyes capture far more information than can be captured by a camera.
See here on Flickr for far more examples of HDR photography.