Swedish contractor Skanska has been awarded a $166m contract to renovate the Olympic stadium in Helsinki.
The project, commissioned by the city council, includes the renovation of the seating and running track and the extension of the roof to cover all the stands and terraces.
Underground, there will be new facilities for sports, gyms and maintenance.
A total of 19,300 square metres of facilities will be constructed, including restaurants and bathrooms, with the entire scope of the project reaching 90,000 square metres.
The completed stadium will be a "diverse and multifunctional arena that will host both sports and cultural events of international scale".
The stadium was inaugurated in 1938 but the Olympics did not take place there until 1952 due to the outbreak of war.
Construction will begin during the first quarter of 2017 and is expected to be completed during in 2019.
Images via Skanska