Okehampton Castle was once the largest castle in Devon. As with several castles that we've covered in recent weeks, it was originally built for one of the Bastard's extended family, in this case Baldwin FitzGilbert, husband of his cousin Albreda. It was still a working castle during the reign of Henry VIII, but when Henry Courtney, the 2nd Earl of Devon, was executed in 1539 for allegedly taking part in a Popish plot, the castle fell into ruin.
Today, it is owned by English Heritage. Entry is free for members, non-members should consult their website for prices. The grounds in particular are famous for the large numbers of bluebells that grow there in springtime. The postcode, for satnav purposes, is EX20 1JA.