St. Emmeram's Cathedral, Nitra, Roman Catholic cathedral in Nitra Castle, Slovakia

St. Emmeram's Cathedral is a structure of worship located within Nitra Castle and combines multiple architectural sections built across different periods. The complex features an upper church, lower church, and a rotunda, all integrated into the castle walls.

The Romanesque chapel of St. Emmeram, dating from the 11th–12th century, is the oldest surviving part; it was long thought to be Pribina's 9th-century church, a theory research has refuted. After a fire in the second half of the 13th century it was rebuilt, and after damage by Matúš Čák Trenčiansky's troops in 1317 it was attached to a new Gothic church. Bishop Meško began the Gothic rebuilding in 1333, completed in 1355; the lower church followed in 1621–1642, and the whole complex was later remodelled in Baroque style.

The cathedral holds a silver reliquary made in 1674 and relics of Saint Cyril brought from Rome through Bishop Karol Kmeťko. Its dedication is to Saint Emmeram, a seventh-century itinerant bishop who did missionary work from the court of Theodo I, Duke of Bavaria. The lower church keeps three tombs of Nitra bishops and three late-Baroque side altars from the 18th century.

Plan your visit according to the posted opening hours, as the cathedral is located within the castle grounds and may have restricted access times. Allow extra time to explore both the upper and lower church sections at your own pace.

The Romanesque chapel was long taken to be Pribina's 9th-century church, but research disproved that. It was rebuilt after a fire in the second half of the 13th century and joined to the new Gothic church after Matthias Csák's troops damaged it in 1317. The rotunda holds a silver reliquary made in 1674.