I can't talk up The Ancient Magnus Bride enough. The stunning visual beauty alone makes this worth watching and watching again, but I have to say I'm also very fond of the characters. It is a little more slowly paced than what I usually watch, and there are some parts that may require you to have a tissue box on standby.
In this anime, you have magic, dragons, and almost every fantasy aspect you can imagine. There are some ugly patches in the story, so be warned there is some gorey imagery even in an eye candy world like this one. Definitely not the darkest anime I've ever seen though.