I took a trip this past weekend to Governor's Island (photos to come!) which was really interesting, and the trip started out from the ferry at the Battery Maritime Terminal. The terminal had been in disrepair and not used for many years, but with a recent renovation it is now the terminal for the Governor's Island Ferry. Here is what I read about it on batterymaritimebuilding.com
"The Battery Maritime Building was completed in 1909 when ferries were still a vital means of transportation in New York City. It is the last surviving East River ferry building from an era when 17 ferry lines traveled between Manhattan and Brooklyn. Commuters waited for the ferry to 39th Street in south Brooklyn, in a lobby lined with cast-iron columns and stained glass windows." More photos to follow of the adventure soon!