Baltic Sea region

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Across
  1. 3. In this country is the widest waterfall in Europe
  2. 4. This country is home to the world's biggest castle
  3. 6. In this unique country bikes are more popular than cars
  4. 9. This Baltic Sea region capital covers 300 islands that are interconnected with many bridges
  5. 11. The world's biggest lake is located in this country
  6. 14. This capital city used to be called Reval
  7. 15. According to world happiness report, this country is ranked the happiest country in the world already 6 years in a row
  8. 17. This capital city was once home to Anton Chekhov who is considered to be one of the greatest writers of all time
Down
  1. 1. The first magazine was launched in this country
  2. 2. This capital city is home to the narrowest house in the world Keret House
  3. 3. This country was the largest in Europe in the 14th century
  4. 5. In this capital city, is the fastest lift in Europe
  5. 7. This capital has been voted best city for urban swimming
  6. 8. This capital city claims to be the city where the first Christmas tree was decorated in 1510
  7. 10. The first country in the world to allow its citizens to vote online in 2005
  8. 12. In this capital city was born famous scientist Alfred Nobel. He established the Nobel Prize.
  9. 13. Just outside of this capital city is located a stunning castle Trakai which is built on an island
  10. 16. This country is home to the world-famous ice hotel. The hotel is crafted each year from two-tonne blocks of ice from the nearby Torne River.