A 25km point-to-point coastal trail, the Bull Island and Howth Cliff Walk is considered an easy hike and a ‘must-do’ trail when visiting Dublin. With plenty of panoramic views of Dublin’s wild and rugged coastline and cliffs and the chance to spot grey seals and cliff-nesting birds, Bull Island is sand spit in Dublin Bay and a National Nature Reserve linked by a wooden Bridge with Clontarf. The hike takes beautiful coastal views as it follows cliffs of the Howth Peninsula and climbs to Ben of Howth (561ft) in the centre before dropping back down into Howth village with much to see and do, including a visit to 15th-century Howth Castle with its rhododendron garden and the medieval ruins of St Mary’s Abbey. Dogs are allowed but must be kept on a leash.