So why did the Miracle Mile museum cross the road? To take the former eastern campus, which divided its collections into a handful of mostly discrete multistory buildings, and transform it into an unbroken building that unites the 3,000 or so pieces on display onto a single floor. But rather than rest on the ground, the David Geffen Galleries are elevated nearly 30 feet above street level; the majority of the footprint stands above the old eastern campus, but a sizable slice extends above the four or so lanes of traffic on Wilshire Boulevard and toward the corner of Spaulding Avenue, where the museum once operated a surface parking lot.