One of the loveliest things about Dublin is its location at the mouth of the River Liffey on Dublin Bay. The city grew from the convenience of the area as a landing place for the Vikings and now stretches around all three sides of the bay.
The coastal villages around the bay and up and down the coast are easily accessible from the city, taking about half an hour on the DART, or Dublin Area Rapid Transport. The scenery along the way is well worth the ride. Head to Howth with its fishing and yacht harbour. For great views walk on the headland which overlooks the whole of Dublin Bay – but take a scarf for those winds which come in off the Irish Sea.