The City Hall Subway Station is an inactive subway station on the National Register of Historic Places. Going out of operation in 1945, it was closed up for 69 years before it was finally unsealed. Its curved architecture and arched ceilings were simply a novelty for the new platform, making it unique among all stations. The glass work on its domed ceiling is a marvel in itself. Since usually visitors cannot actually enter the station, the only way to see it is to stay on the six train past the final Brooklyn Bridge stop, and marvel at this beautiful station from the train as it turns around here. Sometimes private events are held in the station, truly a rare experience for those lucky enough to be invited.