As I still do not have any scenery or building that would be appropriate for Siam (Ayutthaya) at the moment, I have to fall back on an Angkor-Wat inspired piece. This is an aquarium decoration representation of the Angkor Thom Gate that I happen to have in my stash. It won't work for Siamese battles of course but will at least be appropriate for the Siamese campaigns against the Khmer.
Compare the photo above of the real thing and those below where I added some small "forest elephants" and a 1/72 figure to show the scale of the model. Based on the relative size of the human figures, I believe the aquarium decoration to be about 1/144 in scale. Even so, the model still has quite a commanding presence for 1/72 even at half its actual dimension.
So far I have only modified the piece by drybrushing it with a tan/mud color. I will put in still more weathering and highlights later on.
First weathering step done...