Mr. de Montebello's other major building programs have included the expansion and renovation of period rooms and galleries for the decorative arts, the opening of new permanent exhibition galleries for drawings, prints, and photographs (supplemented in 2007 with the new Joyce and Robert Menschel Hall for Modern Photography), the conservation and installation of the Gubbio Studiolo, the opening of the Antonio Ratti Textile Conservation Center, the opening of the new Mary and Michael Jaharis Gallery for Byzantine art, and the installation of Coptic art in a crypt-like gallery carved out of former storage space beneath the museum's Great Hall staircase.