Today flags are hoisted to honor the Finnish Swedish Heritage Day.
There are about 300,000 people living in Finland whose mother tongue is Swedish.
The day was first celebrated in Finland in 1908, on the day of the death of King Gustavus Adolphus of Sweden; the day when the Swedish empire was founded.
Since 1979, the Finnish Swedish Heritage Day has been an official flag day in Finland.
Many of the Finland-Swedish people are celebrating the day with their family, and this year the national celebration is at the Åbo Svenska Teater in Turku, southwestern Finland.