London Bridge is Falling Down, My Fair Lady

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Across
  1. 2. Big Ben's tower
  2. 4. got its name to distinguish it from St. Paul’s Cathedral
  3. 8. the monarch’s personal bodyguards who travelled with him
  4. 9. the tallest building in London
  5. 10. fortress founded by William the Conqueror
  6. 11. a place in Hyde Park where Karl Marx gave his speech
  7. 12. Hyde Park's nickname
Down
  1. 1. London museum inside a former power station
  2. 3. where coins are made
  3. 5. museum with a Giant Sequoia tree and a skeleton of a dinosaur (... museum)
  4. 6. Chaucer, Kipling, Shakespeare, T.S. Eliot and the Brontë sisters are buried there
  5. 7. occupies the Palace of Westminster