If you happen to be looking for anything related to religion, mythology, folklore, or legend, Encyclopedia Mythica is an excellent source. It contains entries that include Asian culture, as well as European. This page is separated into eight different areas, the Near East, India, Egypt, China, Greece, Rome, Islam, and Europe. Each section contains literature, essays, pictures, and links to more sites on each specific culture and history. PBS History has a variety of information on its companion sites to its documentaries.
Sites are interactive, illustrated, and interesting.
Ancient History contains many interesting links.