A small capital with a huge reputation, Dublin's mix of heritage and hedonism will not disappoint. All you have to do is show up.
Layers of History
Dublin has been in the news since the 9th century, and while traces of its Viking past have been largely washed away, the city is a living museum of its history since then, with medieval castles and cathedrals on display alongside the architectural splendours of its 18th-century heyday, when Dublin was the most handsome Georgian city of the British Empire and a fine reflection of the aspirations of its most privileged citizens. How power was wrested from their hands is another story, and you'll learn that one in its museums and on its walking tours.
Personality Goes A Long Way
Dubliners will admit theirs isn't the prettiest city, but will remind you that pretty things are as easy to like as they are to forget…before showing you the showstopper Georgian bits to prove that Dublin has a fine line in sophisticated elegance. True love is demonstrated with brutal unsentimentality round here, but they'll go soft at the knees when talking about the character and personality of the 'greatest city in the world, if you ignore all the others'. Garrulous, amiable and witty, Dubliners at their ease are the greatest hosts of all, a charismatic bunch with compelling soul and sociability.
A Few Scoops
Even in these times of green juices and heart-monitoring apps, the pub remains the alpha and omega of social interaction in Dublin. The city's relationship with alcohol is complex and conflicted, but at its very best, a night out in the pub is the perfect social lubricant and one of the highlights of a visit to Dublin. Every Dubliner has their favourite haunt, from the never-changing traditional pub to whatever new opening is bringing in the beautiful people. With more than 1000 of them spread about the city, you'll be spoilt for choice.
All the World is Dublin
For as long as it's been around, Dublin has looked beyond Irish shores for inspiration. Once the second city of the (British) empire, Dublin has always maintained a pretty cosmopolitan outlook and in the last two decades has conspicuously embraced diversity and multiculturalism. You'll hear languages and eat foods from all four corners of the globe, and while it used to be said that 'real' Dubs had to be born within the canals like their parents and grandparents before them, these days you're just as likely to meet a Dub whose parents were born in Warsaw, Lagos, Cairo or Beijing.
All the information is quoted from https://www.lonelyplanet.com/ireland/dublin