Each spring, local fishermen put up this rope bridge across a chasm 18m (59 feet) wide and 24m (79 feet) deep, swinging over the sea between the mainland and a small island. The bridge has a practical purpose—allowing access to the island’s salmon fishery, which it’s been doing since 1755 (don’t worry, they do regular maintenance). Visitors can use it for a thrilling walk and the chance to call out to each other, “Don’t look down!” (By the way, that is excellent advice.) If you are acrophobic, stay clear; if you don’t know whether you are, this is not the place to find out. Note: A 12-mile (19km) coastal cliff path leads between the Giant’s Causeway and the rope bridge. It is always open and is worth the exhaustion.