...whoa.
The Mysterious Cities of Gold
"In March 2007 Movie Plus Group acquired the rights to the story from NHK and announced that they would be producing a full length feature film reprising the original story, with the intention of looking at a sequel if the film proved successful. The film entered production in 2008."
and also:
"Three new seasons of 26 episodes each are confirmed and in progress. The design for the characters will be the same with some 3d graphic update. The production will begin late 2009 and the first season is due to air in 2011."
This cartoon cultivated a love of history and mythology in me from a very young age. Sure, it kinda died along the way of growing up somewhat, but this was such an awesome cartoon when I was young.
Double whoa. Lyrics for title song can be found here:
http://www.80scartoons.co.uk/cities2.php