Copyright

You may use all pictures free of charge, whether for private or commercial use. You may crop, change or distort pictures to suit your purpose. You may use pictures without providing a link or mentioning the source, although we are of course grateful if you do provide a link.

It is forbidden to use pictures for criminal, pornographic or any other illegal purposes or to insult or offend any country, organization or person whatsoever. 

It is not permitted to copy the pictures onto a web site and offer them for downloading. It is strictly prohibited to upload pictures to Wikimedia Commons.