What book comes to mind?

DCC

Broken Earth trilogy and Great Cities duology by N. K. Jemisin
Pretty much anything I've ever read by Adrian Tchaikovsky but special attention to Shattered Earth series, Children of Time series, and lately Service Model

Hyperion (Series) and Project Hail Mary. A Fire Upon the Deep also stands out, but do note that the author died before finishing the series, which leaves parts of the story painfully unanswered. The series and characters were incredibly different than most books.

Watership Down
The Lord of the Rings
A Confederacy of Dunces
The Accidental Tourist
Any of the Harry Potter Books
To Kill a Mockingbird
The Girl With The Dragon Tattoo (while Salandar is such an engaging character the story of the book is a chore to read)
The Green Mile

Wheel of time

All the colors of the dark.

Luna: New Moon

The Spellmonger Series

aquarium atlas

The Expanse Series! All of the characters are extremely well written. The plot and setting are also amazing. (personally: I would watch the show and THEN read the books.)

Second this opinion.
I watched the show and then decided to read the books. I've read the first three and all its made me realise is how good the show is.
(The books are great too!)
- Have fun reading the rest of the series! Took me about a week to proccess my feelings, when I finished the final book.
I agree about how good The Expanse books are, but I’m on the other side of coin about the tv series. I had a hard time getting into the series the first time I tried to watch it. I don’t think I quite what they were doing at first but now having read the first four books I started rewatching the first season and it totally clicked this time I’m tearing through the TV series this time.
- The first couple episodes are kinda a slog; they give a lot of background info for the setting so it's a bit of an info-dump. The book writers did state that the tv series has their ideal setting appearance and ship design, so it made visualizing the books easy for me.

A Memory Called Empire by Arkady Martine.

The wandering inn. I started reading it 2ish years ago. I am still reading. The author literally writes faster than I can read. In a good way.

No killing Goblins!

https://wanderinginn.com/

Believe it or not, the 2 original Winnie the pooh novels. I just finished reading my son the second one again, and the ending is melancholy and bittersweet I nearly cried.

Fritz Liebers Fafhrd and the Gray Mouser series.

If you like grownup fantasy this is better that LOTR IMO. Or at least at the same level, less opera more character, again IMO.

The stand and 11/22/63

Locked Tomb trilogy. I devoured those books and they consumed me back.

Missed opportunity of using the word "deeply"

"The german revolution" by Pierre Broue, it's a gripping read even if you know the ending.

The old man and the sea