This time, Geoff Marshall takes us on a tour of the Northern Line, looking for unusual features including unfinished platforms, secret escalators, fibbing signs and even a plastic owl.
This time Geoff Marshall is starting at Upminster and travelling from east to west on the District Line, and along the way will point out all the things you've most likely missed on your travels.
Geoff Marshall reveals dozens of features and facts about London's Central Line that you probably didn't know. We start in Epping and head east to west across London.
Geoff Marshall follows the brown line, as he continues his exploration of the London Underground network. But why's he starting in Stanmore? And which is his least favorite station?
Geoff Marshall travels the length of the Jubilee Line to discover some of its more unusual features. He finds a secret governmental tube entrance, the network's most pointless waiting room, and an elephant.
Geoff Marshall travel's London's H&C tube line, looking for the unusual and little-known features. If you like this video, check out Londonist's YouTube channel for the secrets of other tube lines.
Which station has a cache of hidden gnomes? Where could you find an abandoned spiral escalator? And which station has its own unique font? Geoff Marshall goes in search of the secrets of the Piccadilly Line.