Sydney Opera House

1234567
Across
  1. 3. what lots of people live in
  2. 6. On the roof and one on a ship.
  3. 7. What it is mostly for.
Down
  1. 1. you sing a?
  2. 2. what is this puzzle?
  3. 4. The place it is in.
  4. 5. antonym of small