The $2-billion Cornell Tech campus on Roosevelt Island will at full build-out total 2 million square feet of mixed-use space. The $2-billion Cornell Tech campus on Roosevelt Island will at full build-out total 2 million square feet of mixed-use space.

NEW YORK CITY—The first phase of the planned $2-billion Cornell Tech Campus opened on Wednesday on Roosevelt Island. A host of university, as well as state and city leaders attended the dedication ceremony for the three completed buildings, including former New York City Mayor Michael Bloomberg, who donated $100 million to the groundbreaking initiative.