This biking trail in Ireland would give an extreme adventure sports fanatic an Adrenaline Rush. The winding track is 4 feet in width at its widest portion and was featured as the "cliffs of insanity" in the 1987 movie 'The Princess Bride'
Standing 214m (702 feet) at their highest point they stretch for 8 kilometres (5 miles) along the Atlantic coast of County Clare in the west of Ireland. From the Cliffs of Moher on a clear day one can see the Aran Islands and Galway Bay, as well as the Twelve Pins and the Maum Turk mountains in Connemara, Loop Head to the south and the Dingle Peninsula and Blasket Islands in Kerry. O’Brien’s Tower stands near the highest point and has served as a viewing point for visitors for hundreds of years.
8. The Trift Suspension Bridge, Switzerland
The Trift Bridge is one of the most spectacular pedestrian suspension bridges of the Swiss Alps. It is 100 meters high and 170 meters long, and is poised above the region of the Trift Glacier. Even reaching the bridge through the ravine by cable car is an adventure.
The Trift aerial cable car takes you up across the Trift gorge and up to the Trift valley. From here you can hike up to the Trift suspension bridge where a fascinating view up to the lake and glacier will reward your efforts. The Windegg hut can be reached either along the direct path Ketteliweg (Level T3) or the easier, Familienweg (Level T2). Surefootedness is required for the direct descent from the Windegg hut. An alpine route (Level T5) leads from the Trift bridge to the SAC Trift hut which takes 3 hours.