Drive north along the Nine Glens of Antrim for views of mountains, valleys, and coastline. This scenic region is one of the locations for “Game of Thrones.” Stop for photos at the ruins of Dunluce Castle. Explore the Giant’s Causeway, enormous hexagonal columns formed by volcanic activity 60 million years ago. In Derry, join a local guide for a walking tour around the defensive walls that encircle the compact old city. Then visit the Walled City Brewery, an award-winning CIE Tours Exclusive venue, for dinner and a flight of their craft beers.