Ireland

First of all one of the official languages in Ireland is Irish or Gaelic in which for example Dublin will be Dubhlinn

and the taxi will be tacsai

Dublin

In Ireland the traffic is left-hand-sided

public buses (which in Irish accent will sound like pooblic boos) are mainly double-deckers

overall the architectural style of Dublin has common stuff with London's

Generally speaking Dublin has lots of bar/inn options.
Temple bar area of Dublin is very authentic, but super touristy.
Main hangouts are happening here.

Celtic F.C. fans are having fun

Irish traditional breakfast is oily and meaty

in Ireland hot water and cold water taps are separate

Irish plate number style

Holly Molly

the Ha'penny Bridge, the main postcard symbol of Dublin

the old library of Trinity college has a bust of Newton

And the original national symbol of Ireland, the harp

Oscar Wild chills on the rock

Cliffs of Moher

the cow with fantastic background

and the fantastic solution for not disturbing the natural landscape, the tourist center.