2022
Earlier this year 
The main entrance is at 99 Schermerhorn Street Brooklyn, NY 11201 down a typical set of subway stairs, there is an accessible entrance at the corner of Schermerhorn and Court Streets.
Upon entering you meet the first of the volunteers who will greet you. There is a small charge for museum entry. Most of the volunteers are retired subway employees with a wealth of knowledge about the system and how it has changed over the years.
The main hall houses fare displays with examples of all of the different styles of barriers and some of the fare vending machines that have been used throughout the history of the subway.
Further in is a school area used to educate children (and people like me) on the history of the subway and its connections to the community through its initial boom years to the neglect of the 70s 80s and 90s to its cleanup, resurgence and re adoption as general mass transit by the people of New York this century.
There are also permanent displays on construction, subway art, political commentary and other aspects of subway life. There are temporary displays which change from time to time.
Always one of my favourites of government institutions is examples of all the things you can't do. Generally speaking signage in places such as subways tell you what you can't do rather than the more positive what you can do. Usually these things are for our own good but they always make you feel a bit unwanted. There is a significant display (hundreds) of such signage that has been used over the years.
As Court Street is still a part of the subway network, it has an active signal cabin where once the doors are opened allows the operator to route trains in and out of Court Street. While this looks ancient I spoke with a retired operator that said this station is typical of the stations across the existing network. The signalling systems of the PATH trains are currently being upgraded to modern technology and the MTA system is doing similar works progressively across the network.
On the lower level you will find examples of most of the different styles and ages of heritage stock and the museum manages. It is quite interesting to walk through these cars and see how they compare to today's spartan cars that are largely vandal and graffiti proof. Also interesting are the examples of heritage advertising that today we'd consider to be a bit on the wrong side.
Thanks to Googler @TraciC who knowing I was in town and knowing my interests let me know about the opening of the new fare systems exhibit which was great to go and see and observe the opening ceremony.
You will find a whole lot more of my photos on the Maps entry linked above.
que lindo post @PaulPavlinovich, este tipo de historias siempre me conmueven, ya que también son mis recorridos preferidos cuando visito ciudades nuevas, ya que ir y ver como es el subterráneo de una ciudad, me marca cuan moderno es o cuan agradable es visitarlo, por ejemplo el subterráneo de Santiago de Chile o el de Panamá , me parecieron tan , tristes en estética para ver, para permanecer en ellos, que apenas entre a ellos ya deseaba salir. Es como que te deja estar en ellos solamente el tiempo indispensable, no me ocurre eso con el subterráneo de la ciudad de Buenos Aires, de principios del siglo pasado, donde el arte esta en cada pared que transitas, te cuenta historias, son de diferentes colores, las identificas rápidamente, en fin, gracias por compartir.
Farid.
Most of the stations are very heavily used and while its obvious there are people trying to keep them clean most of them are run down @FaridTDF - there are some exceptions like WTC which is bright white and well lit. There are some other stations with tiled art incorporated into their walls and of course there are the Otterness statues Life Underground and sometimes bands play in the subway.
Nice post @PaulPavlinovich! I sometimes find using the subways in NYC like entering a new world! Not just being subterranean and bathed in artificial light but just that with buskers there, I'm like, "Wait.. what... this is down here?!"
