The 47-piece collection contains works by Paul Cézanne, Edgar Degas, René Magritte, Édouard Manet, Claude Monet, and Pablo Picasso. LACMA executive director Michael Govan said it was the biggest gift in the museum's history, and The Washington Post called it "conceivably one of the greatest art gifts ever, to any museum".[92] Perenchio's donation, which becomes effective upon his death, occurs only if the museum completes construction of the new building designed by Peter Zumthor.[92]