Roppongi hills is the largest post war development in Tokyo. Barnbrook won an invited international competition to design the corporate identity. As part of the identity design, Barnbrook Fonts created Mori Priori Sans and Serif – versions of what became Priori Sans and Priori Serif.
The winning concept was based on the meaning of Roppongi which is six trees. Not one, but six different logos were created all with the same basic structure of six circles. The different logos are used interchangeably around the development.