Allosimanius Syneca is a cold, snowy, beautiful planet. It is so beautiful that if you stood on top of the Ice Crystal Pyramids of Sastantua, it is possible that your brain will fall out due to unobserved beauty. Trillian took the Heart of Gold to this planet in an attempt to cheer Zaphod up, but teleported away in disgust when Zaphod refused to leave the bathroom. She discovered it through its entry in The Hitchhiker's Guide to the Galaxy.
- Chapter 11 of Life, the Universe and Everything.