The Gherkin

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Across
  1. 3. Moving in a twisting or spiralling pattern.
  2. 5. The action of building something, typically a large structure.
  3. 6. A prize or other mark of recognition given in honour of an achievement.
  4. 9. In the sky.
  5. 11. The action or process of finishing something.
Down
  1. 1. A familiar or humorous name given to a person or thing instead of or as well as the real name.
  2. 2. Warn (someone) of a danger or problem.
  3. 4. The principal front of a building, that faces on to a street or open space
  4. 7. The lowest load-bearing part of a building, typically below ground level = the .... of the building
  5. 8. A heap of things laid or lying one on top of another.
  6. 10. Known about by many people.