Narrow Water on new stamp series
Narrow Water Castle in County Down has found its way into a unique new stamp collection.
It is one of the iconic buildings from across the UK which will represent the letters M-Z in the alphabet in the latest Royal Mail collection.
The castle, just outside Warrenpoint, represents the letter N and is only the second site in Northern Ireland to be chosen for the new series of stamps.
Philip Parker from Royal Mail told the BBC the castle was one of the "finest examples of 16th century buildings in Ireland".