Some of my all time favorite books (I tend to like fairytale-ish fantasy, but enjoy edgier high fantasy too):
Lud In The MIst - By Hope Mirrlees (if you haven't ready it and like stardust, I really recommend it!)
Stardust by Neil Gaiman
The King of Elfland's Daughter by Lord Dunsany
World Beyond the Wood by William Morris
A Song of Ice and Fire series (of course, amazing)
The Last Unicorn by Peter S Beagle
Howl's Moving Castle by Diana Wynn Jones
Book of Atrix Wolfe by Patricia McKillip
The Farseer Trilogy by Robin Hobb
Twilight of Avalan by Anna Elliott
To name a few. All really great in my opinion.
Any suggestions?