With the ones that I have answered, I located them by using keywords that describe the image in a Google image search. It was just a case of finding the right words
For example for
http://cellar.org/showpost.php?p=777292&postcount=574 I used "Golden Tree France" (I guessed it would likely be in France)
For
http://cellar.org/showpost.php?p=778581&postcount=668 it was more difficult to find the right words. Most searches using words such as caves, cliffs, rock face, dwellings came back to Petra. Knowing that many such places have a religious significance, I added religions to the searches. I can't remember exactly what I used but it was something like "caves Buddhist" that led to the answer.
For
http://cellar.org/showpost.php?p=778786&postcount=678 I used 3 words that described the picture and the answer came up straight away. Those 3 words are...