Newark  is discussed on the Newark Penn Station page

Harrison has two tracks and two wall platforms. The station is pretty bland however it does give a rail fan a thrill of seeing Amtrak and NJT trains whiz by on the center three tracks. The main feature here is the "free" ride to Newark at all times except when trains are using the Newark Bound Track for service from Newark.

Journal Square has four tracks and two island platforms. Newark Trains generally use the "local tracks" while trains to/from 33^rd street use the "express tracks", but any train can use any track The station also serves as home of the Port Authority’s rail division and a mall with bus lanes and shops. The mezzanine which has heaters also allows a view of the trains below. The station has been renovated to add brighter lighting and a cleaner appearance. This station serves the Newark to World Trade (red) and Journal Square to 33^rd (Yellow) lines. To the South of the World Trade Center bound "local’ track is a bypass track used by the former World Trade Center express trains which features a side platform once used by the Pennsylvania Railroad’s service to Exchange Place Terminal once located at street level above the H & M’s Exchange Place station described below. Leaving here is a four track line of which the center two tracks descend into the H & M tunnel while the outer pair were used by the Pennsylvania Railroad to their Exchange Place Terminal. The name was changed in the 1920s from Summit Avenue.

Grove Street has two tracks and an island platform. The Mezzanine is in the center as is definitely of 1960s vintage. The station’s original name was called Grove- Henderson Streets and a short trackway remains which served as leads to their original shops, now replaced by the Harrison Car Maintenance Facility (HCMF). A new entrance has been opened at the East end and leads to a City park upstairs.

Exchange Place has two tracks and an island platform. The station is fairly deep using escalators to access the street. The station was closed after 9/11/01 due to flooding of the river tube and the station. While we have no backup, it is believed that water levels here reached higher than the platform damaging signals, tracks, and other infrastructure. Is lengthened to hold ten cars and an interlocking via a reopened tunnel was added to allow use of the station as a terminal. A look at the curved ceiling will show where the extension is located (West end). A highlight here is the neon art over the escalators and the historical art in the passageway to the other track. The station appears to be two wall platforms due to a center supporting wall, but the West end of the station will reveal the passageway to the other track and escalators and elevators to the street. if you will use the elevator rather than the escalator you will see a lower mezzanine complete with stairs to the platform and a  group of two elevators at the end of a passageway which lead to  the street fare control.

World Trade Center is discussed on the World Trade Center page