Serena Altschul takes a tour of New York City's Museum of Modern Art, which is soon to reopen following a major $450 million renovation, with more than 40,000 square feet of new gallery and performance space, and about a thousand additional pieces of art on display. Altschul talks with museum director Glenn Lowry, curator Sarah Suzuki, and architect Liz Diller, of Diller Scofidio + Renfro, about the museum's expansion.

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