Picture of the week - Double exposed Pagoda - how to
I did not save the picture of the pagoda, so this guide is text only. First I opened up the picture of the pagoda and the courtyard as layers in gimp, with the courtyard on top. Then I set the courtyard layer to "screen" in blending options and viola. There are more intrinsic ways to this, using masks and what not, but this worked well enough for me.