The "Plus de couleurs" artists' collective, which specialises in graffiti, regularly transforms the wall of the Trempolino (located on the boulevard Léon Bureau) on the Ile de Nantes every three months. This imposing wall, 6 metres high and 22 metres long, has been used as a canvas by urban artists since 2021. These artists, both established and emerging, present their varied creations, whether figurative, abstract or experimental. Whether local or from elsewhere, these artists are coming together to surprise and amaze the people of Nantes.