Nidaros Cathedral, also known as Nidarosdomen, can be said to be the very heart of Trondheim, Norway. The building alone embodies centuries of religious and national history. Built over the burial site of King Olav II Haraldsson (later canonized as St. Olav), it holds the place of honor in Norway’s heritage.
Being the northernmost medieval cathedral in the world, it attracts pilgrims and visitors from around the world – especially those devoted to St. Olav, the country’s patron saint, also considered Norway’s “eternal king.”
St. Olav, born around 995, reigned as king of Norway from 1015 to 1028. His life and reign were marked by his dedication to the unification of Norway under Christianity. His conversion to the faith, and his subsequent mission to bring Christianity to his kingdom, became defining elements of his reign.
However, it was not without opposition. In 1030, Olav was killed in the Battle of Stiklestad while fighting against other Viking factions who opposed his Christianization efforts. Only a year after his death, Olav was canonized by Grimketel, the then Bishop of Nidaros, following reports of miracles associated with his tomb. This canonization was later confirmed by the Pope, and St. Olav’s legacy as a martyr-king began to shape Norway’s Christian identity.
The construction of Nidaros Cathedral began in 1070, under the reign of Olav Kyrre (St. Olav’s nephew), with the intention of commemorating the saint’s resting place. The grand cathedral was designed to honor his memory and was built on the site of his original wooden shrine. The completed church, then known as Kristkirken (Church of Christ), became the burial place of Norwegian royalty in the 11th and 12th centuries. The church’s altar was built directly over St. Olav’s tomb, making it an important pilgrimage site, and the reliquary containing his body became a major focus of local devotion all around Scandinavia.
Over the centuries, Nidaros Cathedral grew, as construction efforts continued until the 1300s. While much of Olav Kyrre’s original structure has been replaced, the cathedral’s design still honors its medieval roots, showcasing both Romanesque and Gothic architectural styles. Following the Protestant Reformation in 1537, the cathedral transitioned from a Catholic institution to a Lutheran one, becoming part of the national Church of Norway. Despite this change, it has remained a symbol of Norway’s Christian heritage and an important pilgrimage destination.
For centuries, pilgrims have made their way to Nidaros to pay respects and venerate St. Olav. His legacy is intertwined with the very foundations of this cathedral, serving as a reminder of the Christianization of Norway and the role of faith in shaping the nation’s history. Today, Nidaros Cathedral stands as both a remarkable piece of religious architecture and the place where the past and present of Scandinavia converge through the epic story of St. Olav.
