PATH (Toronto) -  PATH is a 29-kilometre (18 mi) network of pedestrian tunnels beneath the office towers of Downtown Toronto Ontario Canada. According to Guinness World Records PATH is the largest underground shopping complex in the world with 371600 m² (4 million sq. ft.) of retail space.The PATH network's northerly point is the Toronto Coach Terminal at Dundas Street and Bay Street while its southerly point will soon be Waterpark Place on Queen's Quay. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer to this question is:
Building