"Frombork - the town of Nicolaus... " a Frombork Travel Page by evaanna

Frombork is a small town of just about 2500 inhabitants situated on a hill rising above the Vistula Bay and between two rivers: the Bauda in the east and the Narusa in the west. It would probably have remained an obscure place, like many of the neighbouring villages, had it not become the seat of Catholic bishops, who erected a castellated cathedral on the plateau at the top of the hill. The cathedral is still there, having been plundered but still left in an amazingly good condition in spite of the many successive wars. Yet, what really made that little town famous is the fact that it was here that the great Polish astronomer and Varmian canon, chancellor and doctor, Mikolaj Kopernik (Nicolaus Copernicus) spent 33 years of his life and, in 1543, died.

Frombork can be accessed from the land but we got to it by boat from Krynica Morska, enjoying a day trip. We had just three hours to visit this historic place before our boat's departure, not enough to explore all its treasures, but enough to realise that we should come back to see what we had missed.
In case you can't find Frombork on this map, it's just west of Braniewo.