Victoria, who had been on the throne for 21 years, visited Warwick Castle with Albert in 1858 for just three hours. They were tourists just like the other ten thousand visitors to the castle, which had been open to the public for at least 30 years before the queen popped in. The royal couple used the visit to learn more about the history of their country from one of the finest castles in England, built some 500 years earlier.