Barnahely Castle or Castle Warren

Republic of Ireland, Ireland

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Barnahely Castle, also known as Castle Warren, is a historic castle complex near Cork Harbour in County Cork, Ireland.

The site began as a medieval fortified residence associated with the de Cogan family, who held it from the 16th century and used it as a defensive stronghold overlooking the surrounding area. Over time, the castle evolved into a larger complex that included a tower house, defensive bawn walls, and domestic buildings.

In 1796, the Warren family built an elegant manor house known as Castle Warren, incorporating parts of the earlier castle into the new residence. Today, the site survives as a picturesque ruin featuring remnants of both the medieval castle and the later Georgian-era mansion. Although much of the structure has decayed, it remains an important historical landmark that reflects several centuries of architectural and local history in County Cork.