Soak up the spooky atmosphere of london at night on thethames where many of londons ghosts walk and shadows lurk sail through londons darkest secret history through royal parks past haunted houses and into the unknown you will meet your tour guide outside the canadian memorial in green park where you will begin to explore the deepest and darkest corners of the worlds most haunted city during this 2 hour experienceon this tour youll see the most haunted of royal parks green park