Mentioned by Penguin and Pia
Things to Do in Edinburgh, Scotland: Free & Paid Activities
"This wacky world of illusions is definitely a fun one – and not something you’d expect to be visiting when you think of “attractions in Edinburgh”. Nonetheless, it’s a great way to entertain the kids – and the adults, too!. The interactive exhibits allow you to fully engage, and the introductory session is a great way to learn a little bit about the science of light and images!"