The Experiential Design Index
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HOK

Also known as: Hellmuth, Obata + Kassabaum

Active

Celebrated its 70th anniversary (Jan 2025); Atlanta studio named AIA Georgia's 2025 Firm of the Year; named Metropolis magazine's "Firm of the Year" for sustainable design leadership (2025); Caltech quantum research center dedicated (June 2026). (verified 2026-07-18)

HOK is a global interdisciplinary architecture, engineering, interiors, and planning firm founded in 1955 and headquartered in St. Louis, with 28 offices on three continents. Within the experiential-design space its work spans museum architecture — including the Smithsonian's National Air and Space Museum and its Udvar-Hazy Center annex — and corporate experience center architecture and exhibit design for clients including Honeywell, Porsche, and KCP&L.

HeadquartersSt. Louis, MO
Other officesAtlanta, GA; Chicago, IL; New York, NY; Washington, DC; San Francisco, CA
Founded1955
RolesArchitecture, Exhibit Design, Landscape Architecture
Websitehttps://www.hok.com

Projects (22)

ProjectVenueRoleYear
The Forge The Forge Architecture 2025
American Century Investments Headquarters Experience American Century Investments Headquarters Architecture 2023
Renovation and Expansion Butts-Mehre Heritage Hall and Sports Museum Architecture 2022
Customer Experience Center Honeywell Global Headquarters Architecture, Exhibit Design 2021
Hall of Fame Lobby Displays National Association of Broadcasters Headquarters Architecture 2020
Elevance Health Headquarters Experience Elevance Health Headquarters Architecture 2019
KCP&L Connect KCP&L Connect Exhibit Design 2018
Northwestern University Welsh-Ryan Arena Renovation Welsh-Ryan Arena Architecture 2018
Exhibit and Display Program (Faces of Philanthropy Gallery) MD Anderson Cancer Center Exhibit Design 2017
Porsche Cars North America Experience Center and Headquarters Porsche Experience Center Atlanta Architecture, Landscape Architecture 2015
National Center for Civil and Human Rights National Center for Civil and Human Rights Architecture 2014
The Commonground Wishard Pavilion ("The Commonground") Architecture 2014
The Dalí Museum The Dalí Museum Architecture 2011
Patricia and Phillip Frost Art Museum Patricia and Phillip Frost Art Museum Architecture 2008
Hazel Hough Wing Museum of Fine Arts, St. Petersburg Architecture 2008
Arthur F. and Ulla R. Searing Wing The John and Mable Ringling Museum of Art Architecture 2007
The Wild Center Core Exhibits The Wild Center (Natural History Museum of the Adirondacks) Architecture 2006
Steven F. Udvar-Hazy Center Steven F. Udvar-Hazy Center Architecture, Landscape Architecture 2003
Jack Daniel's Distillery Visitor Center Jack Daniel's Distillery Architecture 2000
The Florida Aquarium The Florida Aquarium Architecture 1995
Original National Mall Building National Air and Space Museum Architecture 1976
James S. McDonnell Planetarium (original building) St. Louis Science Center Architecture 1963

Sources