From Wikipedia: http://en.wikipedia.org/wiki/Carrick-a-Rede_Rope_Bridge
Carrick-a-Rede Rope Bridge is a famous rope bridge near Ballintoy in County Antrim, Northern Ireland. The bridge links the mainland to the tiny island of Carrickarede (from Irish: Carraig a' Ráid, meaning "rock of the casting"). It spans 20 metres (66 ft) and is 30 metres (98 ft) above the rocks below. The bridge is mainly a tourist attraction and is owned and maintained by the National Trust. In 2009 it had 247,000 visitors. The bridge is open all year round and people may cross it for a small fee.
The area is exceptional in natural beauty with stunning views of Rathlin Island and Scotland. The site and surrounding area is designated an Area of Special Scientific Interest for its unique geology, flora, and fauna. Underneath there are large caves, which once served as home for boat builders and as shelter during stormy weather.