The greatest fantasy/sci-fi series of all time are, in my humble opinion:
Lord of the Rings
Red Rising
Stormlight Archive
Hyperion Cantos
Wheel of Time
Chronicles of Narnia
CS Lewis’ Space Trilogy
...
Terry Pratchett’s Discworld novels.
Ken Macleod’s The Fall Revolution. In particular, The Stone Canal.
Tad Williams’ Otherland series.
Ken Macleod’s The Fall Revolution. In particular, The Stone Canal.
Tad Williams’ Otherland series.