Across
- 3. Ancient Greek temple in Athens.
- 7. Spanish palace and fortress complex.
- 9. London's iconic clock tower.
- 11. Leaning Italian bell tower.
- 12. Well-preserved Roman temple in Rome.
- 13. Indonesian Buddhist temple.
- 15. World-famous painting in the Louvre.
- 16. Monumental U.S. sculpture of four presidents.
- 17. Mayan pyramid in Mexico.
- 18. Symbol of freedom in New York Harbor.
- 19. Moscow's historic city square.
- 20. Ancient Chinese fortification.
- 21. Iconic Parisian iron landmark.
Down
- 1. Ancient Roman amphitheater.
- 2. Jordanian rock-carved city.
- 3. Egyptian burial monuments.
- 4. Marble mausoleum in India.
- 5. Enigmatic Egyptian statue with a lion's body and a human head.
- 6. Distinctive Australian performing arts venue.
- 7. Cambodian temple complex.
- 8. Ancient Greek hilltop citadel.
- 10. Neolithic stone circle in England.
- 14. Rio de Janeiro's iconic statue.
- 16. Incan citadel in the Andes.