What is the tallest castle Nijo or Blarney?

Blarney Castle, located in Ireland, is known for its iconic Blarney Stone and has a height of about 18 meters (60 feet). In contrast, Nijo Castle in Japan, which is more of a palace than a traditional castle, has a height of around 11 meters (36 feet). Therefore, Blarney Castle is the taller of the two.