9. Fata Morgana, Antarctica
The best optical illusions rely on a distorted perception of depth, and that’s exactly what Fata Morgana is about. A frequent phenomenon in Antarctica, Fata Morgana is a type of mirage that appears when the air is so clear and pure that it makes faraway objects look focused and sharp.
Sometimes, objects even get distorted, inverted, or bent to look like completely different things, giving birth to several legends of UFOs, witchcraft, phantom ships, and sightings of islands that never existed.
According to modern conspiracy theories, even the Titanic could have been a victim of a Fata Morgana which distorted the ship’s perspective of the iceberg.