Walker started out studying journalism but quickly changed his field and received a Bachelor of Science in Landscape Architecture in 1955.
[citation needed] At Harvard University, Walker had been deeply influenced by his professor, Hideo Sasaki.
The company has received many awards[9] and co-designed the World Trade Center Memorial in New York with architect Michael Arad.
In 2013 he was involved in a public argument with the architect of a neighboring building, Museum Tower, because the glare from the glass was damaging the vegetation.
[11] Peter Walker is also a co-author of Invisible Gardens, which touches on the modernist movement in the United States and the comparison of other landscapes to those in Europe.