The Stephen Hawking Centre at the Perimeter Institute for Theoretical Physics (PI) is a major expansion of the renowned existing research facility in Waterloo, ON, Canada. The architects were charged withthe development of a design that would both more than double the size of PI’s facilities as well as compliment the existing iconic PI building – a challenge compounded by a severely constrained site. The resulting design incorporates research offices, interaction spaces, and facilities for expanded programs in physics education, and, by drawing heavily on notions of transparency and continuity, creates a unified whole that fully supports PI’s mission of interdisciplinary collaboration and innovation.The challenge posed by PI’s Director, the renowned scientist Dr. Neil Turok, was nothing less than extraordinary: “to provide the optimal environment for the human mind to conceive of the universe.” Quite simply, this building must help attract the world’s best scientists and then encourage them to plumb the most obscure depths of the conceivable. The finished facility both expresses in architectural terms the cutting‐edge research of the physicists and, in its every detail, supports this work; it satisfies the crucial demand that no idea should be without a platform for expression or forum for discussion and no opportunity to stimulate the scientific imagination should be missed.