Berney Marshes Reserve RSPB is a remote (by rail, anyway) marshland perfect for birdwatching.
It's easy to reach Berney Marshes Reserve RSPB, in Norfolk, by train. Simply hop on a train to Berney Arms station and then it's just about half a mile away. Note that Berney Arms is a request stop - and there is no road access to the station - so tell the conductor with ample time that you would like to stop - and when you catch a train back, raise your hand until the driver of the train acknowledges they have seen you.
For more info including facilities and opening times, visit Berney Marshes Reserve RSPB’s website.