The Cushendun Caves, located in County Antrim, were formed over millions of years and gained fame as a filming location for Game of Thrones. Visitors can park at nearby lots and take a short stroll to the caves, where they can admire the red sandstone walls and learn about their geological history. The caves are also a stone's throw from other attractions like Glenariff Forest Park and Kinbane Castle, making them a must-visit spot for fans of nature and fantasy alike.