If you like fantasy fiction, The Moon of Gomrath by Alan Garner (1963) is a must-read. It is not necessary to read the prequel The Weirdstone of Brisingamen - I didn't, when I first encountered Gomrath.
What I find most exciting about this book is that it is about the re-emergence of The Old Magic into the modern world; and what this implies:
Would it be 'a good thing' if The Old Magic came back into this world? Well, it would not be the best possible thing, for sure (we are supposed to go forward not return) - but maybe it would not be the worst thing.
It would be, essentially, turning the clock back and trying again from the perspective of human destiny - but at least it would be an acknowledgement that we had failed: which would be psychologically healthy.
Was the decline and extinction of the Roman Empire a sign of its deep spiritual malaise - should be have rejected that more decisively? It sometimes seems that the Renaissance was (overall, in net effect) a rebirth of the worst of ancient knowledge - rather than the best; a regression rather than the progression it is commonly depicted to be. That was associated with a resurgence in the High Magic such as astrology and alchemy - which seems like an error, overall and in effect.
Anyway - we can all thrill at the Old Magic - in fiction, at least; and it is never all that far away in fact.