This Glossary of World's largest provides unique details of more then 20 different areas and categories.

The unique set of categories are:
1. World's Highest Mountains
2. World's Largest Countries
3. World's Highest Waterfalls
4. World's Tallest Buildings
5. World's Most Spoken Languages
6. World's Largest Subway Systems
7. World's Longest Rivers
8. World's Longest Suspension Bridges
9. World's Deadliest Volcanic Eruptions
10. World's Largest Lakes
11. World's Largest Islands
12. World's Largest Forest Area Countries
13. World's Largest Oceans and Sea
14. World's Largest Deserts
15. World's Most Corrupted Countries
16. World's Largest Road Network Countries
17. World's Largest Cruise Ships
18. World's Largest Army
19. World's Largest Dams
20. World's Largest Refineries
21. World's Largest Banks
22. World's Largest Economies