June 6 is National Day of Sweden.
National Day of Sweden was introduced in 1916 at the Stockholm Olympic Stadium to honor the election of King Gustav Vasa in 1523.
This day is considered as the foundation of Sweden.
The event also marked the end of Kalmar Union, when Sweden was ruled by Denmark, thus the country gained its independence.
Until 1983 the day was celebrated as Swedish Flag Day, and later its name was changed.
In 2005 National Day of Sweden replaced Whit Monday and became public holiday.
