The West Concourse is a 600-foot (182.9 m) marble-clad walkway that opened in 2013. It runs below West Street, linking the World Trade Center, PATH station, Brookfield Place, and Battery Park City. Retail stores line the north wall; the south wall is the outer wall of the North Memorial pool. Underground pedestrian routes throughout the hub are brightly lit and welcoming. These new passages have been greatly simplified, eliminating the up-and-down-staircase treks of the past.