I am seeing claims that the recently completed CHUM hospital in Montreal is the “largest in North America”. I am trying to figure out what it is based on. Not bed count (it has about 1600 beds - there are others with over 2000 beds). Patient rooms? (all rooms are supposedly single occupancy - i.e. one bed per room). What about floor space? It has 3 million square feet (which includes research areas and offices) in adjoining buildings. I can’t find square footage for other hospitals (which may be greater - but in adjoining buildings?). How would something like the Mayo Clinic compare in floor space?