Is it an innie or an outie?
I like this because it's simple, and it exists in the real world, as a detail of the Palace of the Legion of Honor, at the Fine Arts Museums of San Francisco.
I wonder: was the architect consciously aware that he was creating a visual illusion?
Here's another view of the architecture, with more of the surroundings, by a different photographer.
By the way, it's an innie.
- Optical Illusion By David Gallagher, Flickr>>
- Optical illusion, Bryan Costales, BCX>>