Explore the rarest routes, take historic rides, visit abandoned stations, uncover secret shortcuts, discover letter-based odysseys and embark on unique Tube challenges with this lively, interactive book. Find secret staircases, take an escalator expedition, race the Tube between stops and find the strangest station on the network! Bursting with facts and activities from YouTube train expert Geoff Marshall with additional sights to see from his co-creator of All the Stations, Vicki Pipe, this book will inspire children - and adults - to seize the moment and explore the hidden world of London’s Underground.