24. St Peter, Barton-on Humber (Lincolnshire)
The Saxon tower dates from the eleventh century. After it was declared redundant in 1972, the churches became one of the most excavated parish churches in Britain.
It’s only open once a month, so check before you go.
There’s a great story here about the forensic reconstruction of the face of ‘Conquest Man’ – one of some 3,000 individuals whose remains were found in the church.
He was obviously a man of some status, since he was bread in an oak coffin. (The oak came from 1079, probably the year he died.) The grave goods indicate a Scandinavian background, but he probably arrived as part of the Scandinavian diaspora that inhabited East England in the time of the Danelaw.