On our way into The Lodge at Ashford Castle we noticed some ruins just off the road. We asked the staff about it and was told that it was Friary of Ross. On our way out we visited the friary. It's address is "Ellagh, Ross, Co. Galway, Ireland". You and I wouldn't call that a street.
The wikipedia article is here and the TripAdvisor reviews are here.
Legend says that the friary was build in the mid-1300s and went back and forth between the monks and the conquering British for centuries.