The subway station in the movie is an abandoned station at Bay Street on the Toronto subway. At one time it was used when trains switched from the Bloor-Danforth line to the Yonge line. When that was discontinued because of switching problems, the station was abandoned. The Toronto Transit Commission rents it out for movie shoots such as this. At one point it had been made to look like a New York subway station and the TTC wished to keep it that way. However the fire department vetoed that because the material used in the "disguise" presented a fire hazard.