St Peter's Church, Conisbrough
This summer I visited St Peter's, the parish church of Conisbrough in South Yorkshire. It is one of the best medieval churches I've ever visited. You can see the earlier, Saxon windows in the nave, allowing in a little light to the dark and mysterious interior.
Evidence of the puritans: heads from the statues protruding from this pillar have been broken off. They thought that images in places of worship were likely to lead to idolatry.
Here's a Squint or Hagioscope built between 1200 and 1475. It allowed worshippers to peer into the magical world of the priest as he performed the miracle of transubstantiation at the altar. Chancels back then were screened off and the priest turned his back on the congregation as he raised the consecrated wafer and transformed it into Jesus' actual flesh. Medieval folk must have marvelled indeed at the happenings viewed through this peep-hole.
We protestants deny that the communion elements transform into anything. Bread remains bread, and wine remains wine. Our awe and astonishment lies in the preaching of the gospel and God's love towards sinners that He would draw us to Himself.