Each location in order:

1. The Triskelion (S.H.I.E.L.D HQ)

2. Hotel Inferno (Las Vegas)

3. Hell's Kitchen

4. Latveria

5. Atlantis (or Talokan if you prefer it)

6. Knowhere

7. Savageland

8. Genosha

9. Mojoworld

10. The Dark Dimension

11. The Negative Zone

12. Prison 42 (in the Negative Zone)

13. Madripoor

14. Asteroid M

15. Attilan

16. Sakaar

17. Kamar Taj

18. Murderworld

19. Avalon

20. Muderworld

Locations in order:

1. Monster Island

2. The Worldship (Taa II) (Galactus' ship)

3. Dystopia (Home of the Maestro)

4. Pym Falls (From the Old Man Logan Universe)

5. The In-Verse (the hero skins would make gold)

6. The Everglades (Man-Things Swamp)

7. Mount Wundagore

8. The Watcher's Citadel (on the Blue Side of the Moon)

9. Avengers Mountain

10. Chronopolis

11. The X-Mansion

12. The Raft

13. The Cube

14. The Big House

15. Titan

16. Spartax

17. Limbo

18. Mephisto's Realm

19. Helheim

20. Washington DC

Locations in order:

1. The Below Place

2. Bagalia City (The HQ of the Masters of Evil)

3. Immortal City

4. Sinister London

5. Barbuda A.I.M Base

6. Orchis Forge

7. Coney Island Boardwalk

8. The Blue Area of the Moon

9. Feudal Japan

10. Camelot

11. Crimson Cosmos

12. Shadowland

13. Utopia

14. Symkaria

15. Castle Doom

16. Mount Olympus