photopin. It searches the Flickr database of images and quickly gives you images and the author credit for your chosen image to copy and paste into your VLE/blog/worksheet. So as an example a search for Baildon ( in West Yorkshire) found me this image, and the text credit (html) to paste below. It is a Creative Commons licence here. If you want to investigate what this means click on the cc link below.
photo credit: Michael of Scott via photopin cc