A NEW HOLOCAUST MUSEUM is to be built under Mussolini's former home, the Villa Torlonia, in Rome. This article in the Washington Times has this interesting aside, about which I would like to hear more:

Beneath the villa is an enormous network of Jewish catacombs. Some six miles in length, it dates to the third and fourth centuries and contains some of the best-preserved paintings and inscriptions of the Jewish community.

UPDATE (29 April): More here.