Does anyone know anything about architetural models?
What materials are mostly used for making these models? what strengths do they have?

My brother lived with an architecture student when he was at uni. He seemed to always use foamboard and uhu glue for his models.

Foamboard, chipboard, acetate and some light plastics and sometimes resin are used most often.

I used foam core (which is white) while working for a firm and also in a drafting course in high school. regular white glue works fine and is easy to tear off if you need to make a correction.