What's the biggest clock tower in the world?

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Tags

1. #structure
2. #standing
3. #abraj
4. #tower
5. #known
6. #central
7. #complex
8. #which
9. #seven
10. #tallest
11. #clock
12. #world
13. #hotels
14. #fifth
15. #holds
16. #royal
17. #biggest
18. #largest
19. #skyscraper
20. #third
21. #mecca
22. #government
23. #makkah