Final answer:
Guy Fawkes, Sir Walter Raleigh, and Sir Thomas More were all imprisoned in the Tower of London, which is the correct answer to the landmark in the question.
Step-by-step explanation:
Guy Fawkes, Sir Walter Raleigh, and Sir Thomas More were all associated with the Tower of London. Guy Fawkes is famously known for the 1605 Gunpowder Plot, an attempt to blow up the House of Lords and kill King James I. Sir Walter Raleigh, on the other hand, fell out of favor with Queen Elizabeth I and was later imprisoned in the Tower of London, where he spent many years before being executed. Sir Thomas More was also imprisoned in the Tower and was eventually executed for refusing to acknowledge King Henry VIII as the Supreme Head of the Church of England. Therefore, the correct answer to the question about the landmark where these historical figures were 'guests' is (b) The Tower of London.