Fiddish has a link to a story about a treasure trove of pre-WWII Judaica buried by the Jews of Auschwitz of all places underneath their Great Synagogue. i wonder if there are any more hidden treasures like this throughout Europe?

Unearthed in Auschwitz

OSWIECIM, POLAND — A crew of Polish archeologists searching for a buried treasure at the former site of the Great Synagogue here struck gold Monday when they discovered a trove of artifacts, including three synagogue menorahs, a Chanukah menorah, the eternal light and several synagogue chandeliers.

The diggers were acting on evidence — unearthed in an incredible tale of luck and suspense — that in 1939, the local Jewish community had buried Torahs and other holy books and various artifacts in metal cases below the synagogue floor, just before the building was blown up by the Nazis. The archeological excavation started at the beginning of June in the once-vibrant Jewish town of Oswiecim, known popularly by its German name, Auschwitz. The town is adjacent to the infamous Auschwitz-Birkenau concentration camp complex.