do you get free toilets in the US?
They mostly don't get train stations!
Joking aside, BART for example used to have free toilets but they closed after the 9/11/2001 thing as a security risk. (I realise that makes little sense but that is how it is).
In more recent times some have reopened (for example at San Bruno) after installing surveillance cameras to record comings and goings. BART is, of course, a notorious hangout for pickpockets who ride to and fro for hours. Beware any who visit San Francisco.
Now as to unusual facilities, time was that coal fires in station waiting rooms were commonplace in the depths of winter. I remember the one on the down platform at Acton Bridge station in particular. I doubt there are any left now. British Railways started into decline with the abolition of Third Class it seems to me.