It has loads of the regular sorts of ornamentation but it's the two exposed sides that make it different. We can see hints of how it was put together. There are doors that open into missing spaces; were the adjacent structures part of this building? If so, why were they removed? If not, why are there doors leading into separate spaces?

I had enough photos to cover all four sides. I found some public domain music that fit. A Youtube video explained how the music can inform the editing. After that, it was plonking everything together and seeing how it worked.

My Favorite Building @ Vimeo

One copy is for color. Tweak the saturation, blur the image, and change to Index mode with limited colors; this merges all the little spots of color into blobs.

The other layer is for lines. Make it grayscale and sharpen it if necessary. Edge detection creates the lines and these can be adjusted with contrast.

Put the Lines layer above the Color layer, and set it to Multiply. That's it!

Well, that's the basic process. The tricky part is making it look good and that requires a lot of adjusting everything because no two photos are alike. If something doesn't like right, just duplicate one of the layers and try something else.