Can you spot the hidden number? This optical illusion features a grid of identical circles with 96 and 69, but one lone circle has the number 99. Optical illusions like this challenge your observation ...

Today’s optical illusion challenges you to find the hidden "28" among a grid of "23s." It’s a fun way to test your focus and attention to detail while giving your brain a quick workout.

As a Colorado local, I think the best things for first-timers to do in Denver include visiting City Park and going on a day ...

Optical illusions are a great way to boost your intelligence and sharpen your mind. They're even said to help with your eyesight too, although at first can certainly play games.

Severed noggins, staircase tumbles and gaping stomach wounds. Megan Hilty, left, and Jennifer Simard in "Death Becomes Her." The movie won an Oscar for its outrageous visual effects. So naturally ...

It’s a total free fall and I just cannot believe he can do that.” From there, the musical's optical illusions only get wilder: Madeline gets her head knocked off during a shovel-wielding ...

It was quite busy when we visited but easy to move around the dozens of exhibits that range from simple wall-mounted optical illusions to immersive experiences that challenge both mind and body.

A clever zebra illusion once challenged viewers to spot a hidden animal's face formed by the zebras' stripes and positions. Optical illusions are more than just visual tricks—they engage your ...

And if not, don't worry, attention to detail is something that develops with time and practice, and optical illusions are a great way to hone those skills over time.

Only those with razor-sharp focus can uncover him in under 5 seconds. Why so hard? Optical illusions for kids and adults alike often cleverly camouflage details in plain sight. Brain Teaser IQ ...