St. Olav Festival Trondheim in Trondheim
St. Olav Festival Trondheim, known locally as Olavsfestdagene, is a church and cultural festival held around Olsok, the commemoration of St. Olav's death and feast day. Initiated in 1962 as Olavsdagene and established in its current form in 1963, it now presents more than 300 events with around 800 Norwegian and international artists across Trondheim, home to Nidaros Cathedral.
Olavsfestdagene traces its meaning back nearly a thousand years, to the death of Olaf II Haraldsson, King of Norway from 1015 to 1028, at the Battle of Stiklestad in 1030.