I've always loved optical illusions and the refreshing view from embracing new perspectives. I love finding two versions of one picture and finding out what is not possible in an M. C. Escher sketch. Despite my fascination with these puzzles, they are just thoughts and visions on paper. They aren't real.

Optical illusions in the real world are much more impressive, but much harder to find. It either takes a mastermind behind the construction or a coincidence caught on camera. Below are 35 of the most mind-blowing optical illusions that have happened in reality. Remember that all of these illusions are just tricks of the mind and deceptions of perception, but some still might take a second look- and a whole lot of sidewalk chalk.

1. Floating Faucet

2. Who's Hugging Who?

3. Simple Floating Man

4. Waterfall Road

5. T-Rex Stares

6. Eye of the Drain

7. Stair Shelves

8. Three Lost Men

9. Street-Cleaning Day

10. Violin Islands

11. Who's in the Chair?

12. Colorful Cavern

13. Spidey, Where Do the Buildings Begin?

14. Who's Carrying Who?

15. Computer Calculator?

16. Proceed With Caution

17. Fish Eyes

18. Floating Man or Hidden Chair?

19. A Day at the Beach with Man-Child

20. Flying on Imagination

21. Just a Table of Food

22. Mer-People

23. X Marks the Spot

24. Owl Coffee

25. A Strong Couple

26. Under Construction

27. Endless Floor

28. A Solvable Rubix Cube

29. A Ship in the Sky or Tower in the Distance?

30. Toy Cars

31. Life Out of Death

32. COWABUNGA!

33. Playing in the Snow

34. Chalk Reflection

35. And Finally, The Classic Question of "Duck or Rabbit?"