Considering the history of the City that is largely under our feet. We discuss the development of the Tube in the City and how it relates to embanking the Thames; peer over Blackfriars Bridge to see if we can spot where the River Fleet feeds into the Thames and discuss modern day sewers. We then weave through the narrow streets to the site of the old Blackfriars Monastery and through the heart of the City. We view archaeological remains; where human remains were once buried; see where water conduits were installed and walk along a former river that, in later times, became a drain before clogging up completely. We will finish our Journey by London Bridge, at the site of the first deep level tube station.