Across
- 3. - Longest man-made structure in the world.
- 4. - Ancient amphitheater in Rome, known for gladiator battles.
- 5. - Incan citadel located high in the Andes Mountains.
- 7. - Ancient city carved into rock in Jordan.
Down
- 1. - Marble mausoleum in India built by Emperor Shah Jahan.
- 2. - Ancient Egyptian structures with tombs inside.
- 4. - Mayan ruins in Mexico, including the iconic pyramid.
- 6. - Statue in Rio de Janeiro, Brazil, overlooking the city.