The Earthsea Cycle – Ursula K. Le Guin

You can't talk about the finest fantasy series without including Earthsea. One of the oldest books on the list (the first was published in 1968), it is a great classic. There are enough Earthsea stories to go around, just like Sword of Truth; in addition to the original trilogy, Le Guin released two extra novels and a collection of short stories.

Earthsea is a magical planet made up of a large number of islands. One of the things that actually distinguishes it from many others is that it lacks the conventional 'vaguely Medieval European' flavor that many fantasy series have. Even in 1968, Le Guin was trying hard to include people of all races in her books, which is excellent.

Link to read: https://www.goodreads.com/series/40909