Since the film takes place in New York, the creators didn't invent anything and simply shot the film in this city, mainly in the city center - Manhattan. 

Filming Locations:

Marcy Avenue Station

In the Movie

The scene where Abigail, Ben, Wallace, and Luke wait for the train.

In Reality

The scene was filmed at Marcy Avenue - a station on the Jamaica Line of the New York City Subway. Located at the intersection of Marcy Avenue and Broadway in Brooklyn, it is served by the J train at all times, the M train at all times except late nights, and the Z train during rush hours in the peak direction.