3. The Carrick-a-Rede Rope Bridge (Ireland)

Carrick-a-Rede Rope Bridge is a rope suspension bridge near Ballintoy, County Antrim, Northern Ireland. The bridge links the mainland to the tiny Carrick Island. The site is owned and maintained by the National Trust, spans twenty metres and is thirty metres above the rocks below. Today the bridge is mainly a tourist attraction, with 247,000 visitors in 2009. When it's windy, this is truly an exhilarating experience – terrifying (if you're afraid of heights) but exhilarating.

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