Hello, it’s a great topic you started, Anastasia!
My all time favourite is 1984 by George Orwell. It’s a bit of a funny story that I read this book by mistake. I wanted to read “Animal farm” and got a piece from a library, but didn’t realised it’s been two works of the same writer in one book. I was pretty shocked when “Animal farm” ended way before middle.
Anyway, I started 1984 without any research about the work beforehand. I got sucked into dysthopian city London and the World controlled by Three authoritorian supercountries. Loved inner struggle and shy disobedience of Winston Smith. You could say that story isn’t original, but I loved every detail of this marvelous masterpiece and the remembrance of it’s strong dark atmosphere still gives the chills.
Almost eight years passed since I read IT first time, but 1984 is still my favourite and love for this peace is even growing. Maybe only “100 years of solitude” and “Remains of the day” challenged it’s number one place in my heart and mind.