Old City Hall Subway Station is one of the prettiest subway stations in New York. Closed in the early 20th Century, the stained glass window and beautiful arches is a remnant of historic New York. This can be one of the hardest secret spots of the lot to see when you’re in New York but if you stay on the 6 train while it turns around you may catch a rare glimpse of this beautiful station. On certain, special occasions the MTA Transit Museum may also run special tours of the station – which allows you to really enjoy this magnificent piece of New York City history so it’s worth checking in with them before you visit.