1. Which American theme park landmark was famously inspired by Neuschwanstein Castle?

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

3. What material covers the exterior of the Guggenheim Museum Bilbao, giving it its shimmering, scaly appearance?

4. The bronze-colored lattice wrapping the NMAAHC pays tribute to the historic craftsmanship of which group?

5. The design of the Oriental Pearl Tower was inspired by which traditional art form?

6. What is unique about Djemaa el-Fna's UNESCO recognition?

7. What color are the tiles on the interior side of the Bab Bou Jeloud gate?

8. During the French Revolution, what was the function of Mont Saint-Michel?

9. What is unique about the construction of the churches in Lalibela?

10. The tripod-shaped structural system used to stabilize the Burj Khalifa is known as what?

11. Unlike the Panama Canal, why does the Suez Canal not require a system of locks?

12. What is the primary material used for the foundations of the buildings lining the Grand Canal?

13. According to legend, what animal must remain at the Tower of London to prevent the fall of the Kingdom?

14. What unusual food ingredient was used in the mortar to strengthen the Great Wall during the Ming Dynasty?

15. How did the Roman army finally gain access to the fortress of Masada during the siege?

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

17. What environmental benefit does the Rain Vortex provide to the Jewel Changi complex?

18. Which famous river runs through Bangkok?

19. What is the traditional Thai greeting called?

20. What is the best-known backpacker area in Bangkok?