The 23rd Street PATH

Port Authority Trans-Hudson

PATH, derived from Port Authority Trans-Hudson, is a rapid transit railroad linking Manhattan, New York City with Newark, Harrison, Hoboken and Jersey City in metropolitan northern New Jersey...

 station, opened on June 15, 1908, is located on 23rd Street and Sixth Avenue

Sixth Avenue (Manhattan)

Sixth Avenue – officially Avenue of the Americas, although this name is seldom used by New Yorkers – is a major thoroughfare in New York City's borough of Manhattan, on which traffic runs northbound, or "uptown"...

 (Avenue of the Americas), at the north end of Manhattan

Manhattan

Manhattan is the oldest and the most densely populated of the five boroughs of New York City. Located primarily on the island of Manhattan at the mouth of the Hudson River, the boundaries of the borough are identical to those of New York County, an original county of the state of New York...

's Chelsea

Chelsea, Manhattan

Chelsea is a neighborhood on the West Side of the borough of Manhattan in New York City. The district's boundaries are roughly 14th Street to the south, 30th Street to the north, the western boundary of the Ladies' Mile Historic District – which lies between the Avenue of the Americas and...

 neighborhood. Before the line was extended to 23rd Street, the northern terminus of the Hudson and Manhattan Railroad was a located station at 19th Street (now closed).

This PATH station has side platform

Side platform

A Side platform is a platform positioned to the side of a pair of tracks at a railway station, a tram stop or a transitway. A pair of side platforms are often provided on a dual track line with a single side platform being sufficient for a single track line...

s, but passengers must descend one level, walk through an underpass, and go up another stairwell, leading to the New York City Subway

New York City Subway

The New York City Subway is a rapid transit system owned by the City of New York and leased to the New York City Transit Authority, a subsidiary agency of the Metropolitan Transportation Authority and also known as MTA New York City Transit...

 mezzanine.