London

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Across
  1. 1. (Historic castle, now a popular tourist attraction)
  2. 4. (Famous landmark with a large bell)
  3. 6. (Food market with artisanal food and drink)
  4. 7. (Marbles at the British Museum)
  5. 8. (Historic venue, famously associated with Shakespeare)
  6. 9. (River running through London)
Down
  1. 2. (Famous shopping street with many retailers)
  2. 3. (Official residence of the Queen)
  3. 5. (Three-letter airport code for London's main airport, Heathrow)
  4. 7. (Famous Ferris wheel with observation pods)