Toronto’s digital billboard-laden Yonge and Dundas Square is owned by the city but managed through a public-private partnership. While primarily hosting commercial content and activities, the spaces and screens of the square are often used for cultural events and artistic content. As cities, arts organizations, governments, and corporations increasingly seek to engage people in public spaces through combinations of media and architecture, what are some of the possibilities and pitfalls associated with their approaches individually and in concert with one another? How does media architecture modulate civic, creative, and commercial interests and impacts?