First, stare at the center of this spiral for 30 to 60 seconds.
We can now take a trip to Rapture, an underwater city from the BioShock video game series, thanks to an animated spiral optical illusion and in-game images posted by redditor supergalacticcaptain. To create the underwater illusion, you must first stare at the center of the spiral above for 30 to 60 seconds. After that, your vision should become heavily distorted, which is the perfect time to view each of the images of Rapture below. Mind blown?