I'd like to go to the place I read about in that novel.
It would be cool to visit the place I read about in that novel someday.
ーI'd like to go to the place I read about in that novel.
「あの小説で読んだ場所に行ってみたい」
place I read about in that novel で「小説で読んだ場所・小説に出てくる場所」と言えます。
ーIt would be cool to visit the place I read about in that novel someday.
「いつか小説で読んだ場所を訪れたら良いなあ」
It would be cool ... で「…だと良いなあ・素敵だなあ」
ご参考まで!
I would like to visit the places mentioned in the novel someday.
・I would like to visit the places mentioned in the novel someday.
小説に出てくる場所にいつか行ってみたいです。
この場合、would like to は「〜したい」、visit は「訪れる」、mentioned は「言及された」、novel は「小説」という意味です。someday は「いつか」という未来の希望を表現するのに便利です。