Want to read a children's book in Swahili? Farsi? Croatian? Hebrew? Dutch? Spanish? Maori etc.
Search the International Childrens Digital Library. You can also search by location (of the library that contributed the book) or by language.
When you actually get into a book, the text is too small to read. See the big magnifying glass at the top of the screen? Use it. How do you turn a page? Click on it.
This is fun for adults too - for those who are learning a language or are interested in scripts.
See also:
The Language Museum
Where do languages come from?
Language dictionaries and another good list (many online dictionaries for languages other than the standard European ones)