Saint Olav's Roman Catholic Cathedral, Oslo

Saint Olav Cathedral stands as the primary Catholic sanctuary in Oslo. It holds the distinction of being the inaugural Catholic church erected in Norway subsequent to the Lutheran Reformation – a transformative Christian movement spearheaded by Martin Luther that momentarily suppressed Catholicism across Northern Europe.

Established in the year 1843, the cathedral's construction aimed to accommodate the burgeoning Catholic community, which expanded due to immigration into Norway. Presently, it is estimated that Norway is home to a modest Catholic population of around 36,000 individuals, with a noteworthy 60% of them being foreign-born. Since its inception, the cathedral has consistently conducted Mass in a diverse array of languages, fostering an inclusive atmosphere to attract a varied congregation.

Architect H.E. Schirmer's creative vision brought the cathedral to life in the distinctive neo-Gothic architectural style. Its formal inauguration took place in 1856, eventually rising to prominence as the central church of the Catholic Diocese of Oslo one hundred years later. Inside, the cathedral boasts several notable features, including an exquisite altarpiece capturing Raphael's Madonna, an opulent Italian marble tabernacle bestowed by Pope Pius, and a throne once utilized by Pope John Paul II during his visit in 1989.

The cathedral received a comprehensive restoration in 1975, during which a new high altar and naves pillars were incorporated. Among the cathedral's treasures is the most ancient artifact found within its walls – the sole surviving relic attributed to King Olav, Norway's patron saint and the namesake of the cathedral.