The world famous Dublin is the nerve centre of Ireland and also the biggest town in the country.Situated around the central part on the east coast of the river Liffey, this blissful city welcomes lot of tourists every year offering the best any tourist spot can ever give. Dublin is a very pricey city and this affluent town is filled with wealth and opulence and as per the records in 2008, this is the fifth richest city across the globe.Another reason that encourages Dublin tourism is the mild climate all through the year with chilly summer and cool not icy winter. Trinity College is positioned at College Green in the hub of the city centre, so you can never avoid this! Kilmainham Gaol is located in Inchicore, just at the outskirts of Dublin city. A trip to this jail would reveal a lot of interesting facts about the Irish history and it is highly recommended to add this in the itinerary. The majestic Dublin Castle lies in the Christchurch region in the Old town of Dublin. The novel castle was originally built by King John of England as a shielding structure and it was the focal point of British rule in Ireland until about 1922. No holiday in Dublin is absolute without a visit to the home of the 'black stuff'. An outing of this museum will give you an implausible insight in the making and brewing of Guinness. Ireland's biggest zoo at Phoenix Park, Dublin Zoo is positioned on the western part of the city centre. It is supposed to be one of the matured zoos and houses over 235 diverse classes of animals and birds. Croke Park is one of the major advanced sporting arenas in the world. It has also hosted a number of chief concerts like Robbie William, The Police, Westlife and Bon Jovi.