Within our heads, we carry around an infinite and endlessly unfolding map of the world. Navigation is one of the most ancient neural abilities we have—older even than language—and here Christopher Kemp embarks on a journey to discover the remarkable extent of what our minds can do. From the secrets of supernavigators to the strange, dreamlike environments inhabited by people with "place blindness," Kemp explores the cutting-edge neuroscience that is transforming our understanding of it, and explains why many of us get lost so easily.