
Drishane Castle is a significant tower house and National Monument built circa 1436–1450 by the MacCarthy clan, located northeast of Millstreet in County Cork on the southern bank of the Blackwater River. The original five-storey keep was enhanced in the eighteenth century with a three-storey house and distinctive architectural additions. In 1876, Lady Beaumont added a battlemented porte-cochère with corner towers, creating an impressive entrance feature. The castle sits on limestone bedrock and reflects the evolution of Irish domestic architecture from medieval fortification to Victorian-era country residence, showcasing the architectural sophistication of Cork's landed families.