Claim: Located about 12 kilometres from Turku towards Helsinki, Tuorla Observatory was established in 1952 by professor Yrjö Väisälä, a Finnish astronomer and physicist, whose main contributions were in the field of optics.
Evidence: It is located about 12 kilometres from Turku towards Helsinki. 
Tuorla Observatory was established in 1952 by professor Yrjö Väisälä. 
Yrjö Väisälä [ˈyrjø ˈʋæisælæ (listen) (6 September 1891 in Utra, Kontiolahti, Grand Duchy of Finland – 21 July 1971 in Rymättylä, Finland) was a Finnish astronomer and physicist. His main contributions were in the field of optics, but he was also very active in geodetics, astronomy and optical metrology.