The brick-built tudor Herstmonceux Castle in Herstmonceux, East Sussex, England was built in 1441 and is one of the oldest significant brick buildings in England. It’s still in use, containing the Queen’s International Study Centre and the Royal Greenwich Observatory, while also hosting England’s Medieval Festival each August. In 2002, Coca-Cola rented the castle for a Harry Potter-themed sweepstakes, turned it into Hogwarts.
