An unavoidable tourist attraction in Trondheim is Nidaros Cathedral. This is a gothic style building that will attract your attention at the first sight. According to the legend, the inner altar of the cathedral stands exactly on the place where King Olav II Haraldsson, the founder of Trondheim, was buried. After his death, King Olav II was proclaimed a saint, and the Nidaros Cathedral became a national shrine after its construction.
The cathedral was built about 230 years ago; The initial works begun in 1070 and the cathedral was completed in 1300. It was destroyed in fires several times, which is why major restorations were necessary starting from 1869; all works were officially completed in 2001. The stained glass windows in the cathedral date back to the beginning of the 20th century. The windows on the north and south sides show scenes from the Old and New Testaments, made on a blue and red background.