 In turn he gave FDR a showcase for New Deal achievement, helped defeat FDR's political enemies in Tammany Hall (the Democratic party machine in Manhattan).He and Moses built highways, bridges and tunnels, transforming the physical landscape of New York City.The West Side Highway, East River Drive, Brooklyn Battery Tunnel, Triborough Bridge, and two airports (LaGuardia Airport, and, later, Idlewild, now JFK Airport) were built during his mayoralty.