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Just over 100 miles north of London, this thirteenth-century citadel serves as the home of the eccentric, invention-obsessed Lord Hawkins and hosts the Innovations Ball in episode three, with its huge courtyard and walled garden featuring prominently; because the original floors were too old for dancing, the crew had to construct a special dance floor, but they loved using the ornate, unusual building as a location. - Gregory James Wakeman