Carrick-a-Rede Rope Bridge in Northern Ireland spans a 60-foot chasm on its namesake island. The drop to the rocky waters below is about 100 feet. As its name suggests, this bridge is held up by ropes, with walkers given two narrow boards to step on as they make the crossing. Earlier versions of the bridge were even more precarious and were used only by a few brave fishermen who crossed the chasm to access secret fishing areas teeming with salmon. The current incarnation, built nearly 10 years ago, maintains the feel of the earlier models, but it is, in fact, much safer and more secure.