Reccomend quiet places to visit ?

Despite being a local here for all 19y of my life, ashamed to say this but I've barely explored the city.

Well I'm taking it up now since I've got my 2mo long summer break from college.

Now, I love visiting libraries, huge parks, bookstores, antique stores, etc

(If it's stores can I get reccs for underrated places and places where I don't have to buy something 🥲)

Currently on my list:

(Friends are advising me against them cause huge population of couples but ig I don't mind)

Cubbon park

Church Street in general

Can I please get good reccs....🙏🏻