Do you think you can accurately differentiate between what's natural and what's man-made? If you are confident enough, here's a fun quiz for you. All you have to do is, guess which of these places are natural and which of them are man-made. 

1. Easter Island, Chile

1. Easter Island, Chile
via cbsnews.com

2. Stone Forest, China

2. Stone Forest, China
via allpointseast.com

3. Moeraki Boulders Beach, New Zealand

3. Moeraki Boulders Beach, New Zealand
via pinterest.com

4. Manpupuner, Russia

4. Manpupuner, Russia
via pinterest.com

5. White Sand Dunes, Brazil

5. White Sand Dunes, Brazil
via suitcasemag.com

6. Fly Geyser, USA

6. Fly Geyser, USA
via allthatsinteresting.com

7. Longyou Caves, China

7. Longyou Caves, China
via www.stuckiniceland.com

8. Pamukkale, Turkey

8. Pamukkale, Turkey
via pinterest.com

9. Reed Flute Cave, China

9. Reed Flute Cave, China
via pinterest.se

10. The World Islands, Dubai

10. The World Islands, Dubai
via privateislandsonline.com

11. Ruby Falls, Tennessee

11. Ruby Falls, Tennessee
via tnvacation.com

12. Al Naslaa Rock, Saudi Arabia

12. Al Naslaa Rock, Saudi Arabia
via unusualplaces.org

13. The Great Blue Hole, Belize City

13. The Great Blue Hole, Belize City

14. Marmore Falls, Italy

14. Marmore Falls, Italy
via photoshelter.com

15. Japanese Atlantis, Japan

15. Japanese Atlantis, Japan
via booksfact.com

16. Cave Of The Crystals, Mexico

16. Cave Of The Crystals, Mexico
via www.geologypage.com

17. Caño Cristales, Colombia

17. Caño Cristales, Colombia
via www.atlasobscura.com

18. Luoping County, China

18. Luoping County, China
via chinadaily.com

19. Chocolate Hills, Philippines

19. Chocolate Hills, Philippines
via unusualplaces.org

20. Stonehenge, England

20. Stonehenge, England
via telegraph.co.uk