This is the American Institute of Architects Center Logo by Pentagram. I think this logo shows good use of positive and negative space. This logo is simple but at the same time, it has a lot going on. The overall active space works really well, it creates the shape of a key and it’s easy to locate for the viewer, I also like how the artist incorporates the city skyline within the key, it’s a great and creative way to active the negative space of the logo. Although this is a very simple design, overall I think this logo uses the white space well.