3XN was chosen ahead of 11 competing architects, including OMA, Toyo Ito and Amanda Levete, to develop its design for a new administrative home for the organisation governing the Olympic Games, to be built on a 24,000-square-metre site on the banks of Lake Geneva.
The new campus would consolidate the IOC's existing operations around Lausanne, creating offices for up to 500 employees.
The brief called for "a building that clearly reflects the values of IOC" and that could "serve as a catalyst for collaboration and interaction for the IOC Staff and Olympic Movement Stakeholders".
"This is an incredible honour for our studio," said 3XN principal Kim Herforth Nielsen. "The Olympic Movement has many expressions that are about people coming together in the best possible way."
"We have designed the new IOC Headquarters as a physical expression of the Olympic Movement and its values expressed through architecture," he added.
The design will be revealed after the IOC has made a final decision on the plans, following negotiations with the Swiss authorities.
Photograph of Lausanne, Switzerland, is courtesy of Shutterstock.