Interior, Morgan Library atrium, 2009. View of the visitor entrance to the original McKim, Mead & White library building from the glass-enclosed central courtyard. Central atrium of the Morgan Library. Built: 2006. Architect: Renzo Piano. The atrium was added as part of an expansion project which integrated the three existing buildings on the Morgan's campus and added additional exhibition space. Pictured is the visitor entrance to the original McKim, Mead & White building. Rather than using the library's formal entrance which faces onto E. 36th Street, museum visitors walk through a secondary entrance which connects Renzo Piano's central atrium to an area at the rear of Charles McKim's original 1906 Italian Renaissance-inspired library building.