The National Assembly for Wales, often referred to as the Welsh Assembly, makes laws in Wales on devolved matters like health, education, the environment, transport and housing. It is based in the Senedd building in Cardiff Bay.
It is made up of 60 politicians who are each an Assembly Member, or AM for short. AMs are voted for by the Welsh public.
AMs in the Welsh Assembly also help to make sure the Welsh Government is doing its job properly by scrutinising it and asking questions.