A secret map of Ireland's coastline played a crucial role in taking down a powerful alliance of pirates that had based itself in the southwest of Ireland in the 17th century.

Almost 1 in 10 Americans claim Irish heritage, according to the Census Bureau. But even the non-Irish celebrate Saint Patrick ...

From RTÉ Radio 1's The History Show, writer Mary Russell tells the story of how the very first Ordnance Survey maps of ...

The cultural complexities of the OS in Ireland are recorded in a variety of source materials, not just maps. In various archives, museums and repositories across Ireland and Great Britain lie ...