The heart of the city

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Across
  1. 2. free from war or fighting
  2. 5. offering security
  3. 6. full of tension
  4. 9. a place where wild flowers grow
  5. 13. a long narrow area surrounded by mountains and a river
  6. 14. involving two or more nations
  7. 15. full of risk
  8. 17. filled with many people
Down
  1. 1. charming or pleasing to the eye
  2. 3. full of work or activities
  3. 4. a synonym for amazing
  4. 7. costs a lot of money
  5. 8. a rural section
  6. 10. full of life or vital energy
  7. 11. not a lot of money
  8. 12. having or enjoying having good health
  9. 16. of a style that is no longer in vogue