Paul Katz, president and managing principal of Kohn Pedersen Fox (KPF), has died at the age of 57. The “mastermind” behind some of the world’s tallest mixed-use buildings, such as the Shanghai World Financial Center and International Commerce Centre in Hong Kong, Katz was praised by colleagues for his attention to detail and ability to foresee a building’s impact on the larger urban scale. “For Paul, it was the entire assemblage, not triumphant individual pieces, that gave the project its urban value,” said KPF design director James von Klemperer, who will succeed Katz as president.