The Cathedral of the Immaculate Conception is not here. This is the old church which was replaced by a newer building in 1992. If you are looking to attend church, go to the Catholic church at the South end of Barrette Street, east of Crookston, off (south) of Fisher Ave.
Interesting photos enjoyed looking.
If you live on the U.S. side, cross border on I-29 North at Pembina, N.D. Once you clear Canadian customs, turn right (east) on Hwy 75, cross Red River, then turn left (north) into Emerson (I think it's Main Street and Hwy. 200). Cross under CN Railway tracks, then turn right (east) on one of the next three streets (Morris, Church, ...). Those will end at a street that parallels the CP Railway tracks. (I think it's 6th Street). Turn right (south), cross a CN spur track and curve sharp left (east). You're now on Boundary Road, parallel to border. Cross the CP tracks and head approx. 2 km east. Monument will be on your right. Road goes another few kms before turning north. (Sorry for uncertainty with street names - Google Maps appears to mislabel some streets, and their labels aren't consistent with MapQuest. When I've been there, I haven't paid attention to street names - it's easy to just find your way around.)