Remembering Nagasaki -- In observance of the 50th anniversary of the bombing of Hiroshima and Nagasaki, San Francisco's Exploratorium has created this "photographic journey," featuring the stunning photographs of Yosuke Yamahata.

Information Age: People, Information & Technology -- This site, curated by the Smithsonian's National Museum of American History, explores the ways in which electronic technology has altered American society over the last 150 years.

1492: An Ongoing Voyage -- This site is an excellent example of how to blend a ton of textual information with a few key photos to produce an extremely informative exhibition. Brought to you by the Library of Congress.

The Great Adventure -- This portion of the Canadian Museum of Civilization is a truly interactive experience, allowing visiters to (virtually) visit different parts of the world.

African Arts, Aesthetics, and Meaning

History Museum of Slavery in the Atlantic

Women Came to the Front: Journalists, Photographers, and Broadcasters During World War II