High-Rise by J.G. Ballard: High Rise is a disturbing look into total societal breakdown. A 40-story apartment building with modern conveniences is erected, and its 2,000 inhabitants live peacefully for a short time. However, life inside the high rise rapidly deteriorates until survival becomes questionable. Ballard expertly shows mankind’s inability to overcome its darkest urges despite advances in technology.
This is also a series; I have read some but not all. This is my fave. Meg and her little brother Charles Wallace meet a cast of colorful characters as they try to find their long-absent, professor father in a journey battling the ultimate evil.
"A Wrinkle in Time" by Madeleine L'Engle. This book changed my life at age 9 or so, by giving me a heroine more awkward than myself to look up to. A SPACE-TIME-TRAVELING, DIMENSION-CROSSING, GIANT-BRAIN-DEFEATING HEROINE, thank you very much.