Nagel Design is an architectural firm that exclusively serves commercial clientele and specializes in fitness centers. The firm is owned and operated by Jeffrey Nagel, who is affiliated with the American Society of Interior Designers. The firm’s clients include Gold’s Gym, Harbor Square Athletic Club, The Peak Health and Wellness Great Falls, The Ridge Athletic Club Bozeman and Powerhouse Gym Billings. Nagel Design has been the recipient of awards including the Gold's Gym International Vendor of the Year Award for Design and Construction Solutions, the Recreational Management Magazine Award for Facility of Distinction and the Nova 7 Award for Best Fitness Design International.