Where is it?

123456789
Across
  1. 2. Home of the Dwarves
  2. 3. A prison in space, once housing the Guardians of the Galaxy.
  3. 5. Birthplace of Pietro and Wanda Maximoff.
  4. 6. Hydra's main location during World War II.
  5. 8. The planet ruled by the grandmaster.
  6. 9. The planet that held the orb with the power stone.
Down
  1. 1. The multiverse where The Wasp was stuck for 30 years.
  2. 2. Location of the Stark Tower.
  3. 4. Birthplace of Thanos
  4. 7. the country where Black Widow was first trained as an assasin.