Parts of a building

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Across
  1. 1. having a lot of space
  2. 4. large and/or strong
  3. 5. area of grass in a park/garden
  4. 7. a wide path for cars
  5. 8. an important part of sth
  6. 11. at the moment
  7. 13. very good to look at
Down
  1. 2. not connected
  2. 3. space or room under the roof
  3. 4. joined to one other house
  4. 6. it has a wall around
  5. 9. very large
  6. 10. room below ground level
  7. 12. underground room where things are kept