1. The Eiffel Tower is located in which city?

2. Which desert flower served as the design inspiration for the Burj Khalifa's footprint?

3. In which room of Versailles was the 1919 treaty ending World War I signed?

4. What does the name 'Teotihuacan' mean in the Nahuatl language used by the Aztecs?

5. What part of the original colossal lion gate at Sigiriya still exists today?

6. Which U.S. President on Mount Rushmore represents the 'preservation' of the United States?

7. What is the most common geometric shape of the basalt columns at the Giant's Causeway?

8. What surprising factor has helped the Leaning Tower of Pisa survive multiple earthquakes?

9. Times Square was originally known by what name before being renamed in 1904?

10. What did architect Bernini intend the massive colonnades of St. Peter's Square to represent?

11. What architectural style is the Mercado de San Miguel most famous for?

12. What caused the 'starlight' holes in the iron roof of Souq Al-Hamidiyah?

13. What is the nickname for the notoriously critical fans who sit in the highest gallery of La Scala?

14. What real-world engineering feature of the Palais Garnier inspired the 'underground lake' in The Phantom of the Opera?

15. What is the name of the iconic circular building that serves as a reading room for the Bodleian Library?

16. What was the name of the underground complex of tunnels and elevators beneath the Colosseum's arena floor?

17. According to local legend, how did Guru Padmasambhava reach the site of the Tiger's Nest?

18. The Grand Canal connects the current capital, Beijing, to which southern city?

19. What material were the chandeliers in the Chapel of St. Kinga carved from?

20. The 272 steps and massive golden statue at Batu Caves are dedicated to which deity?