What was once a Viking settlement at the mouth of the River Liffey, Dublin is now a well-known tourist destination. Dublin is the capital city of Ireland and has a rich, tangible history spanning over a thousand years. Being the biggest city in Ireland, Dublin has thousands of tourists every year and the most popular place for people to visit is the Guinness Storehouse. In 2012 it had over one million visitors. If you chose to take up car hire in Dublin, you can take the half hour drive to visit the Aras an Uachtarain, which is where the President of Ireland resides.