Meier's squares vs Ungers's squares

It's been an architecture day for me in Frankfurt.  I spent most of my day just visiting two signature buildings by two of my favourite architects.  I stayed for three hours in each of these two museums, not quite distracted by their exhibits but totally obsessed by the ubiquitous square in their design language.

Richard Meier's 1985 Museum für Angewandte Kunst:

O.M. Ungers's 1984 Deutsches Architekturmuseum: