Helsinki-päivä Ritarihuoneella 1975 Helsinki-päivä Ritarihuoneella 1975 Share On Helsinki Day, it has been possible to explore places that are not normally open to the public. In 1975, the residents' association of Kruununhaka organized an open house day at the House of Nobility. Show on map Used in articles Helsinki Day – the City of Helsinki's birthday Article Article Go to content Photographer Helsinki City Museum / Eeva Rista Period 1975 Finna.fi record Open in Finna(Link leads to external service)