Merrion Square is a great green space in the centre of the city. The Georgian square is surrounded on three sides by Georgian redbrick houses along with the Natural History Museum and the National Gallery of Ireland (both are free to enter). It contains the National Memorial to members of the Defence Forces who died in the Service of the State. There are also some sculptures such as the Joker’s Chair in memory Dermot Morgan. There is also a playground in the square and every Sunday the Open-Air Art Gallery is held on the external railings of the square (www.merrionart.com). Some photos below. Check it out for yourself some day.