Ready for some more optical illusions? Take a quick break and tickle your mind with these four eye-expanding puzzlers.
TWO HEARTS: With colored backdrops, these two hearts appear to be the same hue. But wait for the image to change. When the color background is taken away, does it change how the hearts look? Let us know in the comments!
MYSTERIOUS SHADOW: Do you see anything unusual about this tree's shadow?
ESCHER-ESQUE: Last time we showed one of Henry Lim's 3-dimensional LEGO recreations of a famous M.C. Escher "impossible" illustration. This time, we've got another one: "Ascending and Descending," Escher's depiction of a seemingly endless staircase. It also featured in the film Inception.
WEIRD WATERFALL: 3D artist Qi Xinghua painted this massive sidewalk illusion which earned him a Guinness Book of World Records entry as the largest 3D painting in the world. Presented at a shopping mall in Guangzhou, the illusion is 100 feet long and took over a month to complete.