Where is the headquarters of the conglomerate managed by Essence Global known as NBCUni?
Essence Global:  Essence manages over $3B in media spend globally, with clients such as Google, The Financial Times, Target, NBCUniversal, BP, FrieslandCampina and Tesco Mobile. NBCUniversal:  Headquartered in Rockefeller Plaza's Comcast Building (formerly the GE Building) in Midtown Manhattan, New York City, the company is one of two successor companies to MCA Inc. (Music Corporation of America), the other being Vivendi through its subsidiary Universal Music Group.
Midtown Manhattan, New York City