Difficult Capital Crossword Puzzle

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Across
  1. 4. One of three capitals in the country that is home to the legislative branch of government
  2. 6. Bilingual capital known for "Parliament Hill"
  3. 9. City containing a very famous wall that splits the city in half
  4. 10. Very populated capital that mainly lies in a massive valley
Down
  1. 1. Capital of a southern South-American country and the birthplace for the tango dance.
  2. 2. East Asian and beauty capital of the world.
  3. 3. Northern capital know for scenic views and Nordic cuisine
  4. 5. Famous city know for its volcanic hills, also known as Tāmaki Makaurau
  5. 7. Ancient North African city known for its Phoenician historical sites
  6. 8. East European capital known for having a treaty named after it (mid-1950s)
  7. 11. Mythology capital of the world and location of the Acropolis