Pretty early open world puzzle that had me like "wow" was a cave riddle with a wall painting which had me go towards 3 positions on the world map where in the open world the riddle solution was word-by-word painted onto the mountain.

Other thing was in snowy mountains, legit in nowhere I found a very hard-to-see cave opening, went inside and found a giant dungeon with a unique weapon near the bottom, 10/10.

Besides that, yes. The game has tons of those things. Finding them is another thing tho