Greenhills is an administrative division in eastern Metro Manila, the Philippines. It is an urban barangay in San Juan and is the largest barangay in the city, covering a total area of 2.09 square kilometers (209 ha) that spans over a third of San Juan City's total land area. Centered on the Greenhills Shopping Center and its adjacent commercial establishments and gated communities, the barangay of Greenhills is considered as a major commercial center of the city and of Metro Manila at large.