3XN is an internationally renowned architectural practice headquartered in Copenhagen, Denmark, founded in 1986 by architect Kim Herforth Nielsen along with partners Lars Frank Nielsen and Hans Peter Svendler Nielsen. The firm has grown from its Scandinavian roots into a global design studio with offices in cities such as Stockholm, London, New York, and Sydney. Known for its strong design philosophy, 3XN focuses on creating innovative, human-centred architecture that blends aesthetics, functionality, and environmental responsibility. 

The company’s work is guided by the belief that architecture shapes human behaviour, and this principle underpins all its projects. 3XN combines research, technology, and design to develop buildings that enhance social interaction, productivity, and well-being. Its approach emphasizes a holistic integration of form, function, and context, ensuring that each project responds to its surroundings while delivering lasting value. The firm also builds on Scandinavian design traditions of simplicity and clarity, while continuously challenging conventional architectural practices. 

A key aspect of 3XN’s operations is its dedicated innovation unit, GXN, established to explore sustainable materials, circular design, and advanced technologies. This research-driven approach allows the firm to address modern challenges such as climate change and urbanization through environmentally conscious solutions. With a multidisciplinary team of architects, researchers, and designers from diverse backgrounds, 3XN delivers projects across sectors including cultural, commercial, educational, and residential architecture. 

Over the years, 3XN has designed several high-profile international projects, including the Olympic House (IOC Headquarters) in Lausanne, the Museum of Liverpool, and the Quay Quarter Tower in Sydney. The firm has received numerous prestigious awards, such as multiple RIBA Awards, reflecting its commitment to design excellence and innovation. Today, 3XN continues to play a significant role in shaping contemporary architecture worldwide through its forward-thinking, sustainable, and people-focused designs.