It is often a place where politicians are accused of acting like infants and throwing their toys of out of their prams.
But the baby daughter of a Norwich MP today showed the House of Commons how to behave and was praised for her 'impeccable' conduct during Prime Minister's Questions.
Norwich South MP Clive Lewis' wife Katy Lewis-Steel sat in the side gallery with the couple's 11-week-old daughter Zana during the feisty session.
And at the end of the questions, speaker John Bercow praised the baby girl who he said had been 'a model of impeccable behaviour' despite the 'turbulence' of the proceedings.
MPs applauded the infant after Mr Bercow's comments.
He said: 'For all the turbulence and discord of today's proceedings, the little baby who has been observing them has been a model of impeccable behaviour from start to finish.
'I've just been advised that the father is the Honourable Gentleman the Member for Norwich South - I'm not going to go so far as to say his behaviour is always impeccable, but the little baby has been impeccable and I think we salute that.
'The future of our democracy and the future of our country.'
Mr Lewis said: 'It was quite a dramatic PMQs and it seems like she stole the show after the SNP because the Speaker called her out basically and said what a well-behaved baby. He did not know she was my baby - and if he had he probably wouldn't have said that.'
Last year Norwich North MP Chloe Smith's son Alastair made history as the first infant of a Conservative MP to be taken into the House of Commons.
Ms Smith, who returned from maternity leave to take part in the vote on the European Union Bill, took her four-month old through the voting lobby, where he also met Prime Minister Theresa May.
'Whichever way you look at it, this was a bit of history and it'll be a privilege to be able to tell our son he was there,' Ms Smith said.
She was told he was one of the first babies ever in the Chamber by Mr Bercow, who gave her permission to bring in the infant.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here