These books really draw you into a new world or an alternative version of ours. Some are more true fantasy, some more magical realism.
If you liked Harry Potter as a kid and are still dreaming of a world where magic exists these are for you. They are often a much harsher look at what a world with magic would be like.
What I love about these kinds of books is they just stretch you into a world that could be possible someday. Often full of twists and turns and unexpected consequences of technology - both good and bad!