ATSA is a not-for-profit organization founded in 1998 by artists Pierre Allard and Annie Roy. The pair create transdisciplinary works and events for the public realm that take the form of interventions, installations, performance art, and realistic stagings. Their actions are born of a desire to raise public awareness of various social, environmental and heritage issues that are crucial and that need to be addressed. To sway both the public and the media—in short, to motivate as many citizens as possible to take an active role in improving society—ATSA marshals artistic quality, a playful, imaginative outlook, impactful media exposure, and key messages backed by sound, thorough research. ATSA’s approach is to ensure that the aesthetic and symbolic statements of its art also serve as tools for interaction and education. Its artistic creations—always provided free of charge and designed to draw people closer together—are one-of-a-kind experiences from both a sensorial and a humanistic standpoint. They are educational and intergenerational, and question the urban landscape, promoting exchange and reflection in the public realm. ATSA is a creative, pacifist and responsible movement committed to producing and promoting events which help advance the causes of sustainable development and the fundamental rights of man and of nature.