Kaleva Church is a church of the Evangelical Lutheran Church of Finland in the district of Liisankallio in Tampere, Finland. Designed by Reima and Raili Pietilä, the building was constructed between and 1964 to 1966. It was constructed using slip forming, with seventeen narrow 35-metre-high (115 ft) hollow concrete U-shapes and full height windows between them. The walls were cast in twelve days. The floor plan of the church resembles a fish, an ancient symbol of Christianity.Photograph credit: Kallerna