You have to be there to have a subjective experience of the Grand Canyon, for whatever that's worth. (This is essentially the qualia distinction between us and LLMs, writ large.)

But in terms of objective knowledge about the Grand Canyon, reading every article and scholarly work would give you a much better grounding. Unless you're a geologist/ecologist doing actual field research there, actually seeing the Grand Canyon would add little, if anything, to your factual knowledge and understanding of the site.