Secret London, Updated Edition: Exploring the Hidden City, with Original Walks and Unusual Places to VisitPaperback, 1 June 2015

Secret London is an essential companion for anyone committed to discovering the true heart of one of the world's greatest capital cities. 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 city streets to easily missed courtyards and gardens--each walk is full of surprises.