The Herz-Jesu church is a Catholic church in Cuxhaven and belongs to the Cuxhaven parish of St. Marien in the Deanery of Bremerhaven. The church is also the northernmost church in the diocese of Hildesheim. The church spire of the listed Neogothic-style building in Grimmershörnbucht is currently (2017) scaffolded with a 25-tonne steel scaffold and wrapped in protective cloths, as the tower needs to be renovated.
The Church of the Heart of Jesus is a Catholic Church. As early as 1897, Catholic church records were kept for St. Michael, later Sacred Heart of Jesus. From 1899 to 1900 the church was built as a garrison church of St. Michael, named after Archangel Michael, by the Imperial Navy Office. It was the first Catholic church in Cuxhaven after the Reformation.