Following the
Nazi seizure of power on 30 January 1933, Liebel was installed as the acting
Oberburgermeister of Nuremberg on 15 March and he was confirmed in the office on 27 April by the city council, which was dominated by the Nazis. He would remain in this post for the entire duration of the Nazi regime until his death in April 1945. He was also made the president of the district councils (
Kreistage) of
Upper Franconia and
Middle Franconia. Liebel was also chairman of the
Zweckverband Reichsparteitag, which organized and carried out the
Nuremberg rallies that took place annually in Nuremberg from 1933 to 1938. Under his administration, the
Nazi Party Rally Grounds that were largely designed by
Albert Speer were constructed. Liebel also embarked upon a program of urban architectural renewal that he felt befitted one of the centers of Nazi pageantry. The aim was to restore the city center to the medieval look of centuries past by exposing half-timbering and, in particular, eliminating late nineteenth-century styling. Among the buildings he slated for demolition was the
Grand Synagogue of Nuremberg. He felt that this "foreign" building with its
Moorish revival architecture could not be reconciled with the "Old German" image that he strove to create. He described it as "the worst building sin of past decades … a settlement can only be reached through the complete removal of the synagogue". He succeeded in having the building completely demolished around the time of the Party rally in September 1938. This was two months before the widespread anti-Jewish
pogrom known as
Kristallnacht. Later in Liebel's mayoralty, the Jews of Nuremberg were rounded up and deported to the
extermination camps in the east. Beginning in November 1941, the police president of Nuremberg, then-SS-
Brigadeführer Benno Martin, oversaw the deportation of over 1,300 Jews. Most of Liebel's tenure in Nuremberg was characterized by a fierce rivalry with
Julius Streicher, who was the powerful
Gauleiter of
Franconia. Streicher was removed from his post in February 1940 for financial and moral corruption by a decision of the
Supreme Party Court. His chief accusers were Liebel and Martin, both of whom had been intriguing against him for years. After Streicher's removal, a similar rivalry developed with Streicher's protégé,
Karl Holz after he became
Gauleiter in April 1942. == Other offices ==