Oarai Station is only a railway station in Oarai-machi. If you want to a pilgrimage to the seichi of GuP, this station will be the starting point.
There is a tourist information office in the station building. You can get a map of GuP in the tourist office. And, there is display of GuP. You can arrive at the Oarai Station in 15 minutes by train from JR Mito Station. Kashima coastal railway has a wrapping of GuP to part of the train.