Here’s the Spanish Castle Illusion.
Look at the black dot for a few seconds, then mouse over the image. Until you move your eyes, it’s in color. Too bad there wasn’t something like this for black and white TV.
Castle of Manzanares el Real (Madrid).
Cool, I didn’t know where it was. I went to several castles in Spain, but I don’t remember if I went there.
That’s super cool! I’d never seen that before.
that was simply incredible!