Some of the venues in this article are surprising and the nocturnal visits sound very expensive but they include some classic historical venues. In Colchester, the Castle and (Howard) Red Lion are included, as is the Redoubt at Harwich, although the Kelvedon Nuclear Bunker and North Weald Station are much newer. In the north of the county, many of the locations are connected to Matthew Hopkins and his anti-witchcraft activities, or earlier victims such as Ursula Kemp (the St. Osyth Cage). In the south, there is also the Valence House, Dagenham.
Good luck ghost-hunting.