Ooh my kids absolutely love this new book called The Travel Adventures of Lilly P Badilly: Costa Rica. It is full color, and it comes with a narrated cd, with silly voices and original music. The reading level is a little advanced, but my kids, ages 5 and 7, read it with the cd and were just fine. The best thing about this book- and yes, I will admit it- it's entertaining for parents too! I tried not to laugh. But i just couldn't help it.
Here is the site- you won't be disappointed.
The Travel Adventures of Lilly P Badilly