Carrick-a-Rede Rope Bridge, County Antrim, Northern Ireland

        

Nearly a million people visit the Giant's Causeway every year. Only a quarter of that number makes it to the nearby Carrick-a-Rede Rope Bridge, which connects the tiny island of Carrickarede ("Rock of the Casting") to the mainland. It's a tourist attraction, no doubt, and it's maintained by the National Trust. But because this 66-foot bridge sees only a fraction of the area's visitors, I still consider it something of a secret. The Carrick-a-Rede Rope Bridge is open year-round, weather permitting (this is Northen Ireland, after all), and the National Trust charges a small fee to cross it.