Parish Church Christ the King stands in Urfahr, across the Danube from Linz's older centre. Its interest is architectural rather than devotional for most visitors: a confident modern church with a strong vertical profile and a quieter interior than the city's grander historic churches.
It will appeal most if you are already exploring north of the river or have an eye for twentieth-century church architecture. Otherwise, treat it as a short detour rather than a rival to Linz's New Cathedral or the hill at Pöstlingberg.