In which UK country is the Giant's Causeway located?

The Giant's Causeway is located in Northern Ireland, specifically on the north coast near the town of Bushmills. This UNESCO World Heritage Site is renowned for its unique geological formation composed of approximately 40,000 interlocking basalt columns that were formed by volcanic activity around 60 million years ago. The site is not only important for its natural beauty but also holds significant mythological and cultural importance in Irish folklore, particularly the story of the giant Finn McCool.

Understanding this geographical and cultural context highlights why Northern Ireland is the correct answer, as the site is distinctively tied to this part of the UK. The other options—Wales, Scotland, and England—do not host the Giant's Causeway, as it is uniquely found in Northern Ireland.