It is said that the landscape architect Lawerence Halprin “worked closely with his wife, whose experiments with movement – in conjunction with a circle of avant-garde composers – informed his user-friendly designs.”

Halprin was keen to design participatory spaces rather than spaces that were merely aesthetic.

It is surprising, given his background was in plant sciences and horticulture before studying landscape architecture at Harvard, that he is best known for his work on public spaces. Although it is possible to surmise that his formative architectural interests and Bauhaus teachers influenced his sense of formal spatial design.  

http://www.portlandtribune.com/features/story.php?story_id=122098201532999900 and http://www.artscatter.com/general/deep-portland-history-lawrence-halprin-and-ira-keller/ and http://www.tclf.org/pioneers/profiles/halprin/index.htm