Rome’s mayor declared that Italy’s planned Holocaust museum must be located in the capital.

Walter Veltroni confirmed last Friday that he wants the structure built on the grounds of Villa Torlonia, which stands over a Jewish catacomb and was the home of dictator Benito Mussolini from 1925-1943.

No construction date has been set, but Veltroni’s declaration follows a controversy between Rome and Ferrara as to which city should host the museum.

Veltroni said Rome suffered the most among Italian cities, with more than 2,000 Jews deported, mostly to Auschwitz.

However, Ferrara, which lost almost its entire Jewish community, says it suffered more proportionally.