The Helsinki Tourist Information Office is open all year at Aleksanterinkatu 24, in the corner of Aleksanterinkatu and Sofiankatu streets.
Telephone service: +358 9 3101 3300
Chat: service open on the MyHelsinki.fi website
E-mail: helsinki.touristinfo(at)hel.fi
Current service hours are given at: https://www.myhelsinki.fi/visit/helsinki-tourist-information/