The wings that completed the Fifth Avenue facade in the 1910s were designed by the firm of McKim, Mead & White. The modernistic glass sides and rear of the museum are the work of Roche-Dinkeloo. Kevin Roche has been the architect for the master plan and expansion of the museum for the past 42 years. He is responsible for designing all of its new wings and renovations including but not limited to the American Wing, Greek and Roman Court, and recently opened Islamic Wing.