Above is a link to, not the best, but good review.

http://www.mdwfp.com/museum/

The above is a much better review. I would hurry over to see their special exibit. I saw a simular exibit in the Anchorage, Alaska Museum that was fantastic.

Drive over to Vickburg to the battlefield site, there is a new, 2004, exibit of a Yankee Gunboat, sank by rebel forces and recently removed from the Mississippi River, very interesting.

I visited them both and they are absolutely fascinating.

The Pergamonmuseum has three different collections: the Antiquity Collection, where you can find the Pergamon Altar, which gave the museum its name, the Islamic Art Museum and the Middle East Museum.

http://www.smb.spk-berlin.de/smb/standorte/index.php?lang=en&p=2&objID=27&n=1&r=4

The Deutsches Historisches Museum shows the complete history of Germany.

http://www.dhm.de/ENGLISH/index.html

I'm not into art but there is the Nationalgalerie, which is separated into seven different museums. Art from the 19th to the 21th century can be seen there. Here are the links to the two most popular ones, so your friend can find out which one he likes best.

http://www.smb.museum/smb/sammlungen/details.php?lang=en&objectId=17

http://www.neue-nationalgalerie.de/ (you must change the language there)

Hope I was a little help!!