UPDATE (4/15/2009 3:40PM) – Artist Ethan Kerber has sent me the most up-to-date renderings. I’ve edited this post to reflect them. Ethan has an entire Flickr photostream dedicated to the project.
From the 2007 press release:
The DC Commission on the Arts and Humanities in collaboration with the Office of planning and local developers have selected artist Ethan Kerber to create and install a large permanent decorative grate for the ground level fresh air intake at City Vista, a new development in the Mount Vernon Triangle area of downtown Washington D.C. This sculpture will enhance the purely functional role of the vent and create a powerful visual metaphor on the façade of the building. This work of art is a representation and celebration of the diverse paths we all walk in life. It engages with the audience to lift their eyes upward along the building and integrates a fluid urban style into the modern lines of the architecture.