Tampere City Library, Metso, is located in a city park, next to a church. The architects, Raili and Reima Pietilä, were influenced by a number of elements, such as Celtic ornaments, sheep horns and glacial spin formations. The materials of the facade are granite, copper and wiborgite. The roof and some of the window moldings are covered with copper. Concrete and granite are the main materials inside the building.