Suggest me books that are a “must-read”

Not sure how to tag this or what flair this falls under but:

I used to read a lot in my high school years. Then I went to College/University and that completely stopped me from reading any books outside of what were required reads in my classes. Being forced to read hundreds of pages a week drained the will to read out of me, UNTIL NOW. I’m almost 27 and I would love to get back into reading. So, what are books that you think someone MUST read? As in, those books or series of books that’s been considered classics or popular over the years. Suggest me the ones you’ve enjoyed reading or the ones that are rarely talked about. Truthfully, I don’t remember much about the books I’ve read growing up so I’m planning to order the Harry Potter series, LOTR, Percy Jackson and Hunger games.