HOK is an American design, architecture, engineering and planning firm, founded in St. Louis in 1955 as Hellmuth, Obata + Kassabaum by George F. Hellmuth, Gyo Obata and George Kassabaum. In 1975 it was named architect of King Saud University in Riyadh, then the single largest building project in the world. Its sports arm, formed in 1983, became the separate firm Populous in 2009. HOK now has 28 offices across North America, Europe and Asia.
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King Khalid International Airport in Riyadh (1983), opened by King Fahd that November, has four passenger terminals and, as the dominant building of the complex, a mosque for 5,000 worshippers inside and 4,000 more on its plaza. For the King Abdullah University of Science and Technology (KAUST) campus (2009) at Thuwal, HOK drew the master plan, with wind towers and solar panels; it was Saudi Arabia's first LEED-certified project and is the world's largest LEED Platinum campus. The Flame Towers in Baku (2012), three skyscrapers up to 182 metres high, are shaped as flames after Azerbaijan's name, "the Land of Fire", where natural gas flares from the ground.
King Khalid International Airport1983 · Riyadh
Flame Towers2012 · Baku
King Abdullah University of Science and Technology (KAUST) campus2009 · Thuwal
Salvador Dalí Museum2011 · St. Petersburg