Why
Square?

square tile near the entrance to each of his buildings....his signature, if you will.
 

When I got serious about photography, I studied the reasons photos were
typically 8x10 or similar, either portrait or landscape, they were still
proportioned thusly.  There are as many theories for this as there are people
with theories....you can do your own homework, if you like, but I'm not gonna
do it here.  

I weighed the options.....arranging multiple images on a wall, for example,
would be easier and look better (more Architectural) if there were not a mix of
vertical and horizontal frames.

I would never have to hold my camera in the vertical postion.

I could have an image hung in the wrong direction and nobody would notice
(?)...well, probably not.

Anyway, I decided to work in "Square", most of the time.  There are obvious
exceptions, but this is my rule.  

For those concerned about framing, there are a lot of commercially available
square-format frames, out there.  Not as many as there are for standard
8x10's, etc., but still quite a lot.  Also, a square image, matted to fit a
rectangular frame, can look very cool, if other factors are right.  

See some examples of a cluster of square photos below.