HOK is a global design, architecture, engineering, and planning firm founded in 1955. It is known for its innovative approach to creating sustainable and functional spaces, including buildings, interiors, and urban environments. HOK has worked on a variety of projects, ranging from commercial and institutional buildings to sports facilities and cultural landmarks. The firm operates in multiple countries and has received numerous awards for its design excellence. HOK emphasizes collaboration and creativity, often integrating advanced technology and sustainable practices into its projects. Notable works include the Cardinal Stadium in Louisville and the San Francisco International Airport terminal.