Across
- 4. complex in Cambodia.
- 8. pyramid in Mexico's Yucatan Peninsula.
- 13. in Lhasa, once the Dalai Lama's residence.
- 15. structure with ancient significance.
- 16. castle or grand residence.
- 18. Ancient Incan city in the Andes Mountains.
- 19. city with an iconic opera house.
- 20. performance with music and singing.
Down
- 1. structure built to commemorate a person or event.
- 2. tower in Paris, made of iron.
- 3. clock tower in London.
- 5. statue in New York Harbor.
- 6. city known for its leaning tower.
- 7. sculpture representing a person or deity.
- 9. area with ancient Greek ruins.
- 10. of waterfalls on the U.S.-Canada border.
- 11. arena in Rome for gladiatorial contests.
- 12. marble mausoleum in India.
- 14. statue overlooking Rio de Janeiro.
- 17. creature with a lion's body and a human head.