Across
- 4. Engineering marvel generating hydroelectric power while controlling Colorado River flow.
- 5. First national park worldwide known for geysers like Old Faithful.
- 10. Unesco-protected caves exemplifying evolution of Hinduism, Buddhism, Jainism architecture
- 11. Former federal prison turned tourist attraction accessible via ferry ride.
- 13. Roman defensive barrier stretching across northern England.
- 14. Fort complex constructed during Mughal Empire serving administrative purposes.
- 15. Fortified medieval stronghold commanding strategic position above English Channel.
- 16. Symbol of independence ringing freedom in Philadelphia's Independence Hall.
Down
- 1. Unique five-story palace facade made entirely out of pink sandstone.
- 2. Popular beach and surfing spot near Sydney.
- 3. Cathedral in Yorkshire noted for its stained glass windows.
- 6. Natural limestone stacks rising majestically from the Southern Ocean.
- 7. Second-highest peak after Kilimanjaro attracting climbers globally.
- 8. Vast wilderness area with diverse wildlife and Aboriginal art sites.
- 9. Largest mosque in Delhi dating back to Mughal period.
- 12. Modern skyscraper providing panoramic views of London.