Urge to Stand is a beautiful, interactive sculpture permanently installed at the Yerba Buena Gardens in front of Zeum, in San Francisco, California. Created by Chico MacMurtrie, this cast bronze and stainless machine sculpture follows the movement of the observer in the area. Whenever an observer on the bench sits, the figure on the globe also sits. Whenever the observer stands, the figure slowly stands. The elements of physical mirroring and mutual gaze between the Urge figure and its observer create a bond that suggests the unity of the human species.