In more than 20 miles of original walks, distinguished historian Andrew Duncan uncovers London’s best-kept secrets. From ancient waterways and the vast network of tunnels that weave their way beneath the city’s streets to easily missed courtyards and gardens—each walk is full of surprises.

London is a walker＇s paradise, and here＇s a guide through miles of endlessly surprising landscapes--from wild health land and waterways to formal gardens; from mews and narrow alleyways to elegant squ