A stop smoking project led by Welsh teenagers has seen more than 1,100 young people across Europe take part.
The teenagers are celebrating the project's success with an event in Cardiff Bay.
Over the past two years the charity ASH Wales Cymru has been leading a project called The Filter Europe to encourage young people to quit smoking or not start in the first place.
The event, supported by Minister for Social Services and Public Health, Rebecca Evans saw over 300 youth leaders from 6 EU countries being trained by the scheme.
A further 800 have benefitted from the education in their home countries.
As part of the project, teenagers from Cardiff, Aberystwyth, Colwyn Bay and Merthyr have worked together to create a young person-friendly toolkit.