Harry Potter, greatest fantasy book of all time. But if you are looking for dystopia type book Life As We Knew It is great, by Susan Beth Pfeffer. Oh, and another great one is Miss Peregrines Home for Peculiar Children.
What a great question! I love fantasy books.. Lord of the Rings, Hobbit, Silmarillion, The Hitchhiker's Guide to the Galaxy (all of them), Journey to the Center of the Earth, whatever book of Neil Gaiman, George R.R Martin's books... Uhul awesome!
Michael Moorcock's Eternal Champion series is old school fantasy at it's best. In various incarnations, the champion exists in various places and times in the multiverse. All genres of fantasy- dark, heroic, fantasy tech, future fantasy, sword and sorcery are represented in the multiverse.
First off, when did you try reading Lord of the Rings? If it's been a few years, maybe you want to try again. It really is a fabulous series.
However, another truly excellent series is the BelGariad by David Eddings (a series of five books: Pawn of Prophecy, Queen of Sorcery, Magician's Gambit, Castle of Wizardry, and Enchanter's End Game). This was followed by the Mallorean (another series of five: Guardians of the West, King of the Murgos, Demon Lord of Karanda, Sorceress of Darshiva, The Seeress of Kell). Mr. Eddings also wrote two Prequels: Belgarath the Sorcerer; Polgara the Sorceress.
Right so people have said some great series, but if you want something different, across the nightingale floor series is pretty amazing, to me that is. It's not got the mystical creatures and beast aspect, more human with supernatural abilities, with an interesting plot and characters you can't help but care about. I love it, you should try it. I'm not sure if it really fits into the teen or YA category though
I like books on Wattpad.com . People write their own stories and post them. Warning tho, not all of them are completed and some of them are really bad... sorry don't want to be mean but it's true. Anyways you could always take an online quiz on it too :3 that's what I do when I'm looking for something new to read. But I liked Hunger Games, Twilight, and the Shiver series. :)