While travelling does show me stuff I haven't seen, that doesn't mean it significantly alters what I thought about the place I'm visiting. Or the world in the larger sense. Sometimes there's a slight surprise in how I expected things to be vs how they are, but those tend to be degrees of difference rather than requiring a large revision.
Art, it's such a huge field. I try to get a context when I see something, but I haven't spent my time learning a lot about art history. But generally I'm not surprised when I see some work of art.
One thing to think about is whether being able to fit everything nicely is itself a symptom of a problem. Hard to know.