The first one is Molly Malone, a famous figure of Dublin.
Number two is the GPO, a centeral point of the Easter Rising (1916) and Civil war (Republican troops attempted to hold the building but got hammered by Free-state artillery).
The 3rd is Leinster house, seat of the Irish Dail, taken when I was on a trip with my college class.
And number 4 is a scene of my chief cause of agony.........Dublin traffic

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