Racing Extinction-Empire State Building-Projection-NYC-Travis Threlkel-Louie Psihoyos-007Photo by Steven Wu Photography

Last night, 20,000 lumen projectors illuminated the south side of the Empire State Building with images of endangered animals for the installation Racing Extinction, a project that could not have been more timely following the shooting of Cecil the lion in Zimbabwe, who got a special memorial callout. Here are some striking photographs from Instagram and the Untapped Cities community:

Travis Threlkel, co-founder of Obscura Digital, a visuals and graphics firm and Louie Psihoyos, a filmmaker and photographer who directed the Oscar-winning documentary The Cove, projected 375-foot animals over the course of 3 hours on a 31-story span of the Empire State Building.

Next, read about the top 10 secrets of the Empire State Building.