The Swimming Stadium, Helsinki

Helsinki Swimming Stadium is an outdoors swimming venue in Helsinki, Finland, located in the Eläintarha area to the northeast of the Helsinki Olympic Stadium.
The Swimming Stadium was designed by architect Jorma Järvi in the Functionalist style prevalent during the 1930s. The stadium was built for the 1940 Olympic Games which were cancelled due to the Second World War, but later hosted the 1952 Summer Olympics.
Because of the war, the construction of the Swimming Stadium took a long time, and it was finally completed in 1947. In wartime, the finished pools were used to store herring and root vegetables.
According to the International Swimming Federation, the water temperature in the pool needs to be at least 22 °C, nowadays 27 °C. The machinery to heat the outdoor pool was ordered from abroad, and the ship transporting them was sunk immediately after the war broke out.
The stadium has been listed as a significant example of modern architecture in Finland by Docomomo.
The Swimming Stadium is a popular recreational venue for citizens. It is open from the beginning of May to the end of September. It is a popular place and in summertime it is visited by about 5000 swimmers every day – 290,000 altogether in the summer 2013. The stadium has three pools: a 50 metre exercise swimming pool, a diving pool and a children's pool, and a small, shallow, round wading pool for small children a little further away. The diving pool has two 1 metre and two 3 metre high springboards, and a 1 metre plateau in front of the diving tower. Use of the diving tower is controlled and requires lifeguard supervision. The 1 and 3 metre springboards are almost always freely usable by customers. However, for example when swimming teams or clubs come to practice at the Stadium, the 3 metre springboard may be reserved for their use.

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