Raahe, FI
Kastelli Giant's Church (Finnish: Kastellin jätinkirkko) is a prehistoric stone enclosure situated near Pattijoki in the North Ostrobothnia region of Finland. It is one of the largest of forty such "Giant's Churches" to be found in this region of Finland. It dates to around 2000 BC.
Listen to the audio guide for Pattijoen Kastelli Free on WIP — starts by itself when you arrive, even with the screen off