Expanding from shade to ventilation system, the proposal introduces the opportunity to address air quality through the use of filtration media. Simultaneous to its other functions, the top surface of cantilevering thermobimetal can be optimally calibrated to reflect light and direct heat into the base of a solar chimney throughout the sunny times of day. The hot air will naturally rise and the displacement will pull cooler air in from below. Once air movement is established and energy collected, air filtration can be integrated. Given that air quality is among the most significant human health impacts of our largely urbanized world, the development of a passive approach to creating pockets of fresh air--akin to a park--within the city could become a new tool in any city’s community health strategy. With its enhanced capability of air movement and filtration, this new surrogate tree will be an icon of healthful, outdoor living--all with a mind of its own.