On the occasion of the World Environment Day celebration, POLYECO SA undertook the creation of an original eco-wall painting in the central well of the Park with public participation on June 8 and 9, 2019. At the same time, a street art work was performed by the artist Leonidas Giannakopoulos, who was in charge of the project. Young and old, they wore uniforms, gloves and masks and participated in the project by completing the composition with a stencil technique