[amaddry]

2 examples I can think of - Frank Lloyd Wright's Price tower in Oklahoma is a mixed use building that has both apartments and office spaces on each floor. Normally these 2 uses are stacked one on on top of each other, not mixed together on every floor - so you could live and work on the same floor which is a cool idea. And the church/office building in Chicago where the church is sitting on top of an office building.