Time is the force driving everything at the American Museum of Natural History (AMNH). From its jaw-dropping dinosaur skeletons and multi-million-year-old fossils to its displays on evolution, the museum on Manhattan’s Upper West Side reveals the wonders of our planet and the universe through the lens of time. Studio Gang’s design for the new Gilder Center for Science, Education, and Innovation expresses that same hidden force, evoking the form of an ancient canyon sculpted by wind and water over the course of many, many years. First announced in 2014, the 230,000-square-foot, $465-million Gilder Center serves as a new gateway on the west side of the 149-year-old building. What had once been a tucked-away back entry off Columbus Avenue and a quirky piece of Theodore Roosevelt Park has been transformed by Jeanne Gang and her team into an immediately recognizable feature attraction.