Please see the updated article of the Irish Houses of Parliament, College Green, Dublin here.
The Irish Parliament House, now the Bank of Ireland, on College Green in Dublin, is one of my favourite buildings in the world. You can go there and visit the House of Lords chamber. Unfortunately, the House of Commons chamber burned down shortly after the Irish Parliament was merged into the British one in 1800. It is supposedly the first purpose-built parliament building in the world, though no longer in use.