Historically informative yet hugely entertaining, it's the perfect way to soak up the atmosphere of this famous city, leaving you with a deliciously scary tingle running down your spine.Intrepid ghost hunters should meet outside the glass fronted gift shop of Oxford Castle Unlocked. Bill Spectre (distinctively dressed as a Victorian undertaker) will depart from that place at 6.30pm every Friday and Saturday evening. For a shorter walk, meet outside the Tourist Information Centre, 15-16 Broad Street at 6:50pm