For nearly thirty years, Peter Rees steered the unstoppable growth of the City of the London — the historic Square Mile at the heart of both the city and global finance. In his capacity as chief planner, he personally approved such iconic skyscrapers as the Gherkin, the Cheesegrater, and the Walkie-Talkie. But as firms and their employees debate whether and when to return to the office — if ever — has the need for central business districts come and gone? If so, how will cities ever replace them? Rees makes the case for why a center of commerce for nearly two thousand years isn’t finished yet.