Biskupin Archeaological Museum 
BISKUPIN - the archaeological reservation in Central Europe. Excavations at Biskupin began in 1934 and excavations revealed a settlement built of wood over 2700 years ago. It had been preserved in excellent condition and before the Second World War was often referred to as the "Polish Pompeii".
http://www.biskupin.pl/

Malbork Castle Teutonic castle in Malbork - history of the castle, and information for tourists.
http://www.zamek.malbork.com.pl/

Museum of Archeology in Krakow Information about the museum - its history, collections and exhibitions.
http://www.ma.krakow.pl/glowna.phtml
