Set on a large natural mound, Launceston Castle dominates the surrounding landscape. Begun soon after the Norman Conquest, its focus is an unusual keep consisting of a 13th-century round tower built by Richard, Earl of Cornwall, inside an earlier circular shell-keep.
The castle long remained a prison and George Fox, founder of the Quakers, suffered harsh confinement here in 1656.
Launceston, Cornwall PL15 7DR England
Before making a visit, check opening hours with the venue