Heikki Castrén (8 August 1929 – 24 January 1980) was a Finnish architect known for his work to public architecture in Helsinki and internationally.
His father Viljo Castrén, a professor of hydraulic engineering at the Helsinki University of Technology.
[1][2] Heikki Castrén completed his secondary education from Töölö Secondary School in 1948 and graduated as an architect from the Helsinki University of Technology in 1956.
[3] Castrén gained international recognition when he won the first prize in the 1958 Architectural design competition for Toronto City Hall, with Viljo Revell, Bengt Lundsten, and Seppo Valjus.
[4] Some of his notable works include: