Reginald’s Tower in Waterford is Ireland’s oldest civic building—over 800 years old—and has been continuously used since its construction. Originally, this site housed a wooden Viking fort, but the stone tower standing today comes from the Anglo-Normans, who fortified it as a key defensive stronghold within the medieval city walls.

Throughout the centuries, Reginald’s Tower has served many roles: a mint under King John, an armory and powder store, and a place to safeguard weapons and cannons reflecting Waterford’s turbulent history. Visitors ascending its spiral staircase will discover a former 19th-century prison cell, artefacts from the Viking era, and even the sword of the Chief Constable—whose family were the last inhabitants of the tower.

Inside, two floors host part of the Waterford Museum of Treasures, focusing on the city’s Viking heritage, offering displays that immerse you into the early foundations of Waterford. Open year-round, Reginald’s Tower welcomes guests daily with seasonal opening times.

For information in Irish click here