Any books where the supernatural is wonderous, rather than scary?

I've been getting really into reading and I'm exploring what kind of stuff I'd like. I was thinking about the poem Sometimes, When the Light by Lisel Mueller. I really adore it, and it made me wonder if there's any books out there with a similar vibe – where the unknown and supernatural is vast and marvelous, rather than scary, especially something that can tap into the kind of childlike wonder of the poem.