Where to Go, how to get there? What to see?

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Across
  1. 3. train
  2. 6. cats
  3. 9. stadium
  4. 10. ruins
  5. 11. bus
  6. 12. sea
  7. 17. lake
  8. 18. mountains
  9. 19. horse
  10. 21. bear
  11. 22. the zoo
  12. 23. city
Down
  1. 1. countries
  2. 2. theater
  3. 4. national park
  4. 5. ocean
  5. 7. mountain range
  6. 8. plane
  7. 13. beach
  8. 14. monument
  9. 15. museum
  10. 16. a ship
  11. 18. monkey
  12. 20. animal
  13. 23. country(side)