Grianán of Aileach: The Ancient Stone Fortress of Ulster
Grianán of Aileach is an iconic hillfort sitting atop Greenan Mountain in County Donegal, Ireland. This remarkable stone ringfort is renowned as the ancient royal seat of the Kingdom of Aileach, which once ruled much of Ulster. The fort’s history is a vivid tapestry of Gaelic power, Viking raids, medieval warfare, and 19th-century restoration efforts…
