Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper,© DBOX

Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper,© DBOX

Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper,© DBOX

Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper,© DBOX

Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper,© David Shankbone

Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper

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Snøhetta to Transform 550 Madison, Philip Johnson's Iconic Postmodern New York Skyscraper

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